1988-continuous creation continuous time a refutation of the alleged discontinuity of cartesian time
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8/19/2019 1988-Continuous Creation Continuous Time a Refutation of the Alleged Discontinuity of Cartesian Time
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C o n t in u o u s C r e a t io n
C o n t i n u o u s T i m e :
R e fu t a t io n o f th e l le g e d
D i s c o n t i n u i t y o f C a r t e s i a n T i m e
RICH A RD T . W . A RT H U R
1 I N T R O D U C T I O N
ACCORDING to Yv on Belaval, ~ eve ryo ne kno ws t hat t ime is dis con tin uou s in
Descar tes' ph i losophy , and as an assessment o f rece ived op in io n on the sub-
jec t, th i s s t a t ement can hard ly be fau l t ed . For a l l comm enta to rs on Descar tes
this century have fol lowed Kemp Smith , Vigier , and Wahl in asser t ing the
d i scon t inu i ty o f Car tes ian t ime, ' wi th the sole excep t ions o f Lapor te and ,
fol lowing him, Beyssade.3 And Laport e ' s d issen t ing view has been deal t wi th
I should like to thank several people for their encouragement and for helpful comments on
previous drafts: Howard Woodhouse, Victor Nuovo, John Nicholas, William Harper, Tom Len-
non, Brian Baigrie, and especially Michael Stack.
' Yvon Belaval, Leibniz: critique de Descartes, (Paris: Libraire Gallimard, 196o , 149: sait com-
ment Descartes a li~ indissolublemententre d'intuitionelles les trois notions de v&it~, d'instant et
d'intuition.., l'instant mesure rintuition, l'actuel mesure l'instant, c'est/~ dire que le temps est
discontinu . . .
' Norman Kemp Smith, Studies in the Cartesian Philosophy (19o2, rpt. New York: Russell &
Russell Inc., 1962), 131. Hereafter cited as Studies. Vigier, Les id&s de temps, de dur~e et
d'~ternit~ chez Descartes, Rev ue Phi losophique (192o). Jean Wahl, D u role de l id~e de l instant d am la
philosophic de Descartes (Paris: Libraire F~lix Aican, 192o .
s Jean Laporte laid out his objections to the standard interpretation promoted by Vigier and
Wahl in his/ 2 Rationalisme de D escartes (Paris: Presses Universitaires de France, 195o), especially
158-6o. Jean-Marie Beyssade's work, La Philosophie Premil, e de Descartes (Paris: Flammarion,
1979), is a re-valuation of some traditional Cartesian doctrines premised on the continuityof time
in his philosophy. See especially vii, 16-x7, 1~9-42, 346-35o. When this article was in proofs
Professor Daniel Garber drew my attention to a recent paper of his in which he arrives at much
the same conclusion (although in less detail) concerning the continuity of Cartesian time as I do
here: 'How God Causes Motion: Descartes, Divine Substance and Occasionalism, Journa l o f
Philosophy (October 1987): 566-80.
[349]
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3 5 ~ J O U R N L o r T H E H I S T O R Y O F P H I L O S O P H Y 2 6 : 3 J U LY 1 9 8 8
a t l e n g t h b y M a r t ia l G u e r o u l t , w h o i n h is
D e s c a r t e s s e l o n l ' o r d r e d e s r a i s o n s 4
v i g o r o u s l y d e f e n d s t h e s t a n d a r d i n t e r p r e t a t i o n o f D e s c a r t e s ' t i m e a s
d i s c o n t i n u o u s - - - t h e c l as s ic t h e s is , a s i t is c a l le d i n t h e s t a n d a r d e d i t i o n o f
D e s c a r t e s ' w o r k s . 5
N e v e r t h e l e s s , I s ha l l a r g u e h e r e t h a t t h e c l as si c t h e s is is i n c o r r e c t , a n d t h a t
t h e r e is n o c o n v i n c i n g e v i d e n c e t h a t D e s c a r t e s d e n i e d t h e c o n t i n u it y o f t i m e ,
a n d n o c o n v i n c i n g e v i d e n c e e i t h e r f o r t h e u su a l p r e s e n t a t i o n o f D e s c a r t e s '
d o c t r i n e o f c o n t i n u o u s c r e a t i o n a s a s s e r t i n g a d i s c o n t i n u o u s s u c c e s s i o n o f d i s -
c r e t e a c ts o f d i v i n e c r e a t i o n , a s o p p o s e d t o o n e c o n t i n u o u s a ct .
I s h o u l d i m m e d i a t e l y c la r if y t h e s e r e m a r k s , f o r I d o n o t m e a n t o s u g g e s t
t h a t D e s c a r t e s h a d a n y w e l l e l a b o r a t e d t h e o r y o f w h a t c o n s t i t u te s a c o n t i n u o u s
d u r a t i o n . H e a p p e a r s t o r e g a r d t i m e a s a n a l y z a b l e i n t o a n in f in i ty o f n e i g h b o r -
i n g m o m e n t s , y e t h e d o e s n o t a t t e m p t t o s o lv e w h a t L e i b n iz r e f e r s t o a s t h e
p r o b l e m o f th e c o m p o s i t i o n o f t h e c o n t i n u u m , t h e p r o b l e m o f h o w (in t h i s
c a se ) a d u r a t i o n c o u l d b e c o m p o s e d o f a n i n fi n it y o f d u r a t i o n l e s s i n s ta n t s o r
m o m e n t s . I n f a c t D e s c a r t e s d o e s n o t e v e n b e l ie v e , I s h a ll a r g u e , t h a t t h e r e is a
p r o b l e m h e r e t h a t s h o u l d o r c o u l d b e s o l v e d b y a fi n i te m i n d . M u c h l es s d o e s
h e a d v o c a t e t h a t , i n t h e c a s e o f d u r a t i o n , t h e r e is a d e f i n i t e l i m i t t o i ts di v is ib i l-
i ty , s o t h a t a n a p p a r e n t l y c o n t i n u o u s d u r a t i o n is i n fa c t c o m p o s e d o f r e a ll y
d i s c r e t e i n d iv i s ib l e s: y e t t h i s l a t t e r v i e w is p r e c i s e l y t h e v i e w n o r m a l l y a t t r i b -
u t e d t o h i m , t h e c la s si c t h e s is , w h i c h I s h a ll e n d e a v o r t o r e f u t e .
B u t b e f o r e I b e g i n m y a r g u m e n t , l e t m e f i rs t t r y t o c l ar i fy w h a t w o u l d
c o n s t i tu t e a d i s c o n ti n u i s t t h e o r y o f t i m e i n t h e s e v e n t e e n t h - c e n t u r y c o n t e x t ,
a n d w h a t w o u l d c o u n t a s e v i d e n c e f o r it. T h e s e a r e q u e s t i o n s t h a t m u s t b e
m o o t e d n o w i f w e a r e t o a v o i d c o n s i d e r a b l e c o n f u s i o n l a t e r.
L e t m e b e g i n w i th t w o c a v ea t s . F ir st , w e m u s t b e w a r e o f a n a c h r o n i s m : w e
c a n n o t a p p l y t w e n t i e t h - c e n t u r y c r i te r i a o f c o n t i n u i t y to d e c i d e w h e t h e r D e s -
c a r t e s ' t i m e i s c o n t i n u o u s . F o r e x a m p l e , t h e f a c t t h a t D e s c a r t e s t a lk s o f n e i g h -
b o r i n g m o m e n t s ' '6 m e a n s , f r o m a m o d e r n p e r s pe c t iv e , th a t t h es e m o m e n t s
4 Martial Gueroult, Descartes selon l'ordre des raisons, vol . 1, l'dme et Dieu. (Paris: Aub ier, 1953).
The translations given are my own, although there is now a good translation by Roger Ariew:
Descartes Philosophy Interpreted According to the Order of Reasons, Voi. l , The Soul and God (Minneapo-
lis: University of Minnesota Press, 1984). From now on I shall cite references to this work in the
form : Gue r ~731193 T he second page nu m ber re fers to Ariew's translation.
5 Oeuvres de Descartes, ed. C harles Ad am an d Paul Tann ery, (Paris: Libraire Philosophique J.
Vrin, 1964-76), Tab le analytique des matii~res, Tom e 1:388 (hereafter cited as ATA with
volume and pag e number.
Descartes refers to neighboring mom ents in his controversy w ith Gassendi (AT.7:37o)
which I shall discuss in section 4 below, and also refers to next mom ents in a letter to Arnauid of
4Ju ne, 1648 (AT.5:193).
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C O N ~ T I N U O U S C R E A T I O N , C O N T I N U O U S T I M E 3 5 1
cannot form a continuous sequence. This is because every continuous se-
quence (such as that o f the real numbers) is dense, which means that between
any two of its terms there is always anothe r. Thus there can be no next instant
in a properly continuous time. Yet clearly this does not count as evidence that
Descartes himself conceived the sequence o f instants as discontinuous.
Secondly, it is often supposed that the discontinuist thesis would be estab-
lished if it could be shown tha t Descartes spoke of indivisibles in time. Again,
this is not so. Descartes does of course allow indivisibles in time--instants-
.just as he allows that there are points in space. But this does not prove that
he thought time to be composed of instants, or that he denied the continuity
of time, any mor e than his acknowledgement of indivisible points proves that
he thought space discontinuous, which of course he did not. That is, he
might have regarded instants as mere endpoints of intervals of time. Then
any interval, being itself indefinitely divisible, would contain an indefinite
number of conceivable instants; but it would no t necessarily be composed of
them.
So what more would we need in order to firmly identify Descartes' time
as discontinuous? Minimally, the indivisibles would have to be
p rts
out of
which time is composed, not mere endpoints. But even granting this, there
are several distinct possibilities for a discontinuous time in the seventeenth-
century context. In the first place, there are two distinct ways in which the
parts of something could be held to be discontinuous, a strong sense and a
weak sense. In the strong sense of discontinuity, the parts could be sepa rated
by gaps; for want of a better term , I shall call this gap discontinuity. In the
weaker sense, the parts could be really separate yet touching, that is they
could be contiguous to each other.7 Now in each case the parts themselves
could be conceived as either extended or point-like, although in the case of
point-like parts it is not clear that we would have to call the resulting time
discontinuous, unless they were explicitly stated to be separated by gaps.
Extended indivisibles, finally, could be either finite or actually infinitely
small. The latter, actually infinitely small yet extended indivisibles, are the
geometric indivisibles used by Descartes' contemporaries: Fermat, Roberval,
Cavalieri, and others.
Thus we have a matrix of six main possibilities for a discontinuous and
7 L e i b n i z d i s t i n g u i s h e s e x a c t l y t h e s e t w o k i n d s o f d i s c o n t i n u i t y i n h i s e a r l y w o r k . F o r i n -
s t a n ce , in h i s l e t t e r t o J a c o b T h o m a s i u s o f A p r i l 1 6 6 9, h e s ay s d i s c o n t i n u i t y c a n b e i n t r o d u c e d
i n t o a f o r m e r l y c o n t i n u o u s m a s s i n t w o w a y s : f ir s t, i n s u c h a w a y t h a t c o n t i g u i t y is at t h e s a m e t i m e
d e s t r o y e d , w h e n t h e p a r t s a r e s o p u l l e d a p a r t f r o m e a c h o t h e r t h a t a v a c u u m i s l e ft ; o r i n s u c h a
w a y t h a t c o n t i g u i t y r e m a i n s . G . W . L e i b n iz ,
Phi losophical Papers and Let t ers
e d i t e d a n d t r a n s l at e d
b y L e r o y E . L o e m k e r , 2 d e d i t i o n ( D o r d r e c h t : D . R e i d el , 1 9 7 6 ), 9 6 .
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352 JOURN AL OF THE HISTORY OF PHILOSOP HY 6:3 J ULY 1 9 8 8
d i s c r e t e C a r t e s i a n t i m e . s I t is e i t h e r g a p - d i s c o n t i n u o u s o r m e r e l y c o n t i g u o u s ,
a n d i ts p a r t s a r e e i t h e r f i n it e , a c t u a l l y i n f i n i te l y s m a l l, o r p o i n t - l i k e .
I n w h a t f o ll o w s , a l t h o u g h I s ha l l m a i n l y b e f o l l o w i n g t h e l o g ic o f t h e
a r g u m e n t s o f t h e p r o p o n e n t s o f t h e c la ss ic t h es is , I s h al l u s e t h e a b o v e m a t r i x
o f p o s s ib i li ti es a s a f r a m e w o r k f o r c l a r i f y i n g e x a c t ly w h a t m o d e l o f t im e is
b e i n g a t t r i b u t e d t o D e s c a rt e s . I n t e r m s o f t hi s f r a m e w o r k , w e s h al l s e e t h a t t h e
g a p - d i s c o n t i n u o u s m o d e l s a r e i n a d m i ss i bl e g i v e n D e s ca r te s ' c o n c r e t e i n t e r p r e -
t a t io n o f t i m e , t h u s e l i m i n a t i n g t h r e e o f t h e s ix a lt e r n a ti v e s . W e s h a l l a ls o s ee
t h a t t h e t r a d i t i o n a l d i s t i n c t i o n b e t w e e n c o n t i g u o u s a n d c o n t i n u o u s e l e m e n t s
c a n n o t b e a r e a l d i s t i n c t i o n f o r D e s c a r t e s; a n d t h a t i t is i n a n y c a s e i n a p p l i c a b l e
t o d u r a t i o n l e s s i n s ta n t s . F i n a ll y , t h e i d e a t h a t D e s c a r t e s c o u n t e n a n c e d e x -
t e n d e d t i m e i n d i v i si b l e s, w h e t h e r f i n i te o r a c t u a l l y i n f in i t e l y s m a l l, is a l so r u l e d
o u t b y h is g e n e r a l p r i n c i p l e s ; a n d , c o n t r a r y t o g e n e r a l b e l ie f , r e c e iv e s n o
s u p p o r t f r o m e i t h e r h is a d v o c a t i o n o f d i s c o n t i n u o u s c h a n g e s o f m o t i o n o r h i s
a n a ly s is o f m o t i o n i n t o i n s t a n t a n e o u s s ta te s .
B u t t hi s is q u i t e e n o u g h p r e v ie w . L e t m e n o w t u r n t o a c o n s i d e r a t i o n o f t h e
s t a n d a r d i n t e r p r e t a t i o n o f C a r te s i a n t im e .
2 THE ARGUMENT FROM CONTI N UOUS CREATI ON
E x c e p t i n G u e r o u l t ' s c as e , a n d t o a l e ss e r e x t e n t K e m p S m i t h' s, t h e a r g u m e n t
f o r t h e c la s si c t h e s i s is s e l d o m s t a t e d e x p l i c it l y . T h i s i s b e c a u s e i t is g e n e r a l l y
s u p p o s e d t h a t o n l y a d is c o n t i n u o u s t i m e w o u l d h e c o m p a t i b l e w i th D e s c a r t e s '
v e r s io n o f t h e d o c t r i n e o f C o n t i n u o u s C r e a t i o n . S o l e t u s b e g i n b y f ir st e x a m i n -
i n g t h e i m p l i c i t a r g u m e n t t h a t t h e c l as s ic t h e s is is e n t a i l e d b y t h is d o c t r i n e .
A c c o r d i n g t o D e s c a r t e s , t h e w o r l d , c r e a t e d b y G o d w i th a c e r t a i n f o r c e in
t h e f i rs t m o m e n t o f ti m e , r e q u i r e s t h e s a m e f o r c e a n d a c t io n t o k e e p i t i n
e x i s t e n c e a t a n y s u b s e q u e n t m o m e n t o f i ts e x i s t e n c e , s in c e t h e r e i s n o p r i n c i p l e
i n h e r e n t i n a n y s u b s t a n c e b y w h i c h i ts e x i s t e n c e a t a l a te r t i m e m i g h t f o l lo w
f r o m i ts e x i s t e n c e a t a n e a r l i e r t i m e . T h i s is D e s c a r t e s ' v e r si o n o f t h e t r a d i-
t io n a l S c h o l as t ic d o c t r i n e o f C o n t i n u o u s C r e a t io n . 9 I t is s t a te d c l e a rl y b y h i m
s O f course, time could be discontinuous w ithout being discrete. Leibniz, for exam ple, held
that ev ery interval of time is actually infinitely divided into con tiguous finite parts, so that for h im
no interval or par t o f time is actually infinitely small or indivisible. (See my Leibniz on Continu-
ity,
PSA
111986]: lo7 -1 15 , f or a short accoun t of Leibniz's heory o f continuity. I ho pe to publish
a fuller treatment in a forthcoming
book, The Labyrinth of the Continuum.
But since no o ne has
attributed s u c h discontinuous-but-not-discrete conception of time to Descartes, I shall not
consider i t furth er here.
9 See l~tienne Gilson's Com me ntary o n D escartes'
Discours de la M~thode
(Paris: J. Vr in, 1925),
34o -42 , fo r a discussion of th e precise similarities and differences between Descartes' version of
this doctrine an d that o f St. Thom as Aquinas.
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C O N T I N U O U S C R E A T I O N , C O N T I N U O U S T I M E 3 5 3
i n se v e r a l p l ac e s , b u t i t is t h e c e l e b r a t e d p a s s a g e o n c o n t i n u o u s c r e a t i o n i n t h e
t h i r d M e d i t a t i o n t h a t is u s u a l l y c i t ed a s e n t a i l i n g a n a t o m i s t ic c o n c e p t i o n o f
t im e . I n m y t r a n s l a t i o n , t h e l a t te r r u n s a s f o l lo w s :
F o r s i n c e m y w h o l e l if e t im e c a n b e d i v i d e d i n t o i n n u m e r a b l e p a r ts , e a c h o f w h i c h i n n o
w a y d e p e n d s o n t h e r e st , i t d o e s n o t f o l lo w f r o m m y h a v i n g e x is te d a s h o r t w h il e a g o
t h a t I m u s t e x i s t n o w , u n l e s s t h e r e i s s o m e c a u s e w h i c h c r e a t e s m e a s it w e r e a g a i n a t
t h i s m o m e n t , t h a t i s , c o n s e r v e s m e . F o r i t i s q u i t e c l e a r t o a n y o n e w h o a t t e n t i v e l y
c o n s i d e r s t h e n a t u r e o f t i m e t h a t t h e s a m e f o r c e a n d a c t i o n is p l a in l y n e e d e d t o
c o n s e r v e a n y t h i n g a t e a c h m o m e n t i t e n d u r e s a s w o u l d b e n e e d e d t o cr e a te i t a n e w i f it
d i d n o t y e t e x is t. T h u s t h e f a c t th a t t h e r e is o n l y a c o n c e p t u a l d i f f e r e n c e b e t w e e n
c o n s e r v a t i o n a n d c r e a t io n is a n o t h e r o f t h o s e t h in g s w h i c h a r e m a n i f e st e d b y t h e
n a t u r a l l i g h t . ' ~
T h e s t a n d a r d i n t e r p r e t a t i o n o f t h is p a s s a g e is a s f o ll o w s. D e s c a r t e s a r g u e s t h a t
a t i m e - - - w h i c h h e r e is a c o n c r e t e t i m e o r d u r a t i o n , t h e t im e f o r w h i c h s o m e
p a r t ic u l a r t h i n g e x is ts -- -i s c o m p o s e d o f i n n u m e r a b l e m u t u a l l y i n d e p e n d e n t
p a r t s , o r m o m e n t s . S i n ce e x i s t e n c e a t e a c h o f t h e s e m o m e n t s is w h o l l y c o n t i n -
g e n t , a n d d o e s n o t a t al l f o l lo w f r o m e x i s t e n c e a t a p r i o r m o m e n t , i t is n e c e s -
s a ry f o r G o d t o r e c r e a t e e v e r y t h i n g i n ea c h s e p a r a t e m o m e n t a t w h i c h i t
e n d u r e s . T h u s t h e w o r l d is c r e a t e d i n a d i s c o n t i n u o u s s u c c es s io n o f d i s c re t e
a c ts , a n d i ts d u r a t i o n , c o r r e s p o n d i n g l y , is a d i s c o n t i n u o u s s e q u e n c e o f d i s c r e te
m o m e n t s .
T o b e ex p l ic i t, t h e r e a r e t h r e e k e y a s s u m p t i o n s i n t h is li n e o f a r g u m e n t .
F i r st , i t is a s s u m e d t h a t D e s c a r t e s r e g a r d e d t i m e a s c o m p o s e d o f m o m e n t s , a s
h is m e n t i o n o f m o m e n t s a l m o s t i n th e s a m e b r e a t h a s t h e i n n u m e r a b l e p a r t s
o f t im e a p p e a r s t o s u g g e s t . S e c o n d l y , t h e fa c t t h a t t h e s e p a r t s a re d e s c r i b e d
a s m u t u a l l y i n d e p e n d e n t is t h e n t a k e n t o m e a n t h a t th e m o m e n t s c o m p o s i n g
t i m e a r e s e p a r a t e a n d d i s t i n c t f r o m e a c h o t h e r , i n t h e w o r d s o f K e m p S m i t h
S t u d i e s ,
1 3 1) , s o t h a t t h e y f o r m a d is c r e te r a t h e r t h a n a c o n t i n u o u s w h o l e .
A n d t h i r d l y , i t is s u p p o s e d t h a t t h is i n t e r p r e t a t i o n o f D e s c a r t e s ' t i m e a s d is -
,o Meditations
3: AT , 7:48-4 9, m y t ransla tion. Th e Lat in text i s: Qu oniam enim omn e
tempus vi tae in partes innumeras dividi potest , quarum singulae a rel iquis nullo modo depen-
dent , ex co qu/ )d paulo ante fuer im, n on sequi tur m e nu nc deb ere esse , ni si al iqua causa me quasi
rursus c ree t ad hoe momentum, hoe es t me conserve t . Perspicuum enim es t a t tendent i ad
temporis n a turam , e~ldem plane vi & ac t ione op us esse ad re in quam l ibe t s inguli s mom ent i s
quibus d ura t conserv andam , quit opus esse t ad ea ndem de n ovo creandem , s i no nd um exis te ret ;
adeo ut c ons ervatio nem sol~t rat ion e /~ creat ion e d ifferre, si t et iam un um ex i is qu ae lum ine
natural i man ifesta sunt .
~ ' Cf . No rm an K em p Smi th: As Descar tes f rankly recognised, he is here com mit t ing himsel f
to yet anoth er thesis, viz. that t ime is com po sed o f durat ionless instants. New S tud ies in the
Philosophy o f Descartes
(L on do n: MacMillan, 1952), 2o2. He rea fter ci ted as
Ne w Studies.
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3 5 4 J O U R N L O F T H E H I S T O R Y O F P H I L O S O P H Y 2 6 : 3 JU LY a 9 8 8
c r e te i s s u p p o r t e d b y t h e d o c t r i n e o f c o n t i n u o u s c r e at io n , i n x h a t G o d c r e a t e s
t h e w o r l d a n e w a t e a c h s e p a r a t e m o m e n t . F o r u n l es s t h e w o r l d a c tu a ll y c e a s e d
t o e x is t a t t h e e n d o f e a c h m o m e n t , t h is r e c r e a t i o n w o u l d n o t s tr ic tl y b e
n e c e ss a ry . H e n c e , a c c o r d i n g t o K e m p S m i t h , th e d o c t r i n e o f c o n t in u o u s c r e-
a t i o n e n t a il s t h e d i s c r e t e n e s s o f t im e , a n d w i t h it a c o n c e p t i o n o f e x i s t e n c e a s
b e i n g l ik e a l in e c o m p o s e d o f d o t s , a r e p e a t e d a l t e r n a t i o n b e t w e e n th e s ta t e o f
b e i n g a n d t h e s t a te o f n o n - b e i n g
( S t u d i e s , 1 3 ~ ) .
B u t al l t h r e e o f t h e s e k e y a s s u m p t i o n s a r e q u e s t i o n a b l e . I n t h e f ir s t p l ac e ,
D e s c a r te s d o e s n o t e x p li ci tl y e q u a t e m o m e n t s w i th t h e i n n u m e r a b l e p a r ts o f
t im e i n t h e a b o v e p a s s a g e . O n a n e q u a l l y p l a u s ib l e r e a d i n g o f t h e p a s s a g e , th e
m o m e n t s c o u l d b e s im p l y t h e e n d p o i n t s o f th e i n n u m e r a b l e p a r ts ( o r fi ni te
i n te r v a ls ) i n t o w h i c h a n y c o n c r e t e t im e m a y b e d i v i d e d . N o r d o e s D e s c a r t e s
e v e r s ay a n y w h e r e e ls e t h a t t i m e i s c o m p o s e d o f m o m e n t s . C e r t ai n ly h e w r i te s
o f t i m e a s i n d e f i n i t e l y d iv i s ib l e , a n d a l s o a s c o n t a i n i n g m i n i m a l p o i n t s o r
m o m e n t s . B u t h e n e v e r e x p l i c i t l y c l a i m s t h a t t h i s i n d e f i n i t e d i v i s i o n r e a c h e s a
l im i t, o r t h a t m o m e n t s a r e t h e r e s u l t i n g i n d iv i si b le p a r t s o f s u c h a li m i t e d
d i v i s i o n . A t t h e l e a s t t h i s s h o u l d p r o m p t u s t o a s k : W h a t i n d e p e n d e n t e v i -
d e n c e i s t h e r e t h a t D e s c a r t e s c o n c e i v e d t i m e a s c o m p o s e d o f i n d iv i si b le m o -
m e n t s ? A n d c o u l d h e r e a l l y h a v e p r o p o s e d t e m p o r a l i n d i v i s i b l e s a f t e r h a v i n g
s o s c a th i n g l y d i s m i s s e d t h e p o s s i b i li t y o f i n d i v is i b le s i n s p a c e ? I s h a ll r e t u r n t o
t h e s e p o i n t s i n d e t a i l i n t h e f o l l o w i n g s e c t io n s .
S e c o n d l y t h e r e i s t h e l o g i c a l s l i p p a g e , a b l y p o i n t e d o u t b y L a p o r t e a n d
B e y s s a d e , b e t w e e n t h e c l a im t h a t t h e p a r t s o f t i m e a r e se p a r a b l e , i n d e p e n d e n t ,
a n d c o n t i n g e n t , a n d t h e c l ai m t h a t t h e y a r e a ct u a ll y s e p a r a t e d , a n d t h u s d i s-
c r et e . T h e s e p a r a b i li ty o r i n d e p e n d e n c e o f t h e p a rt s o f t im e b e c o m e s p a r u n
p r e m i e r g li ss e m e n t , i n B e y s s a d e 's a p p o s i t e t u r n o f p h r a s e , t h e i n d e p e n -
d e n c e o f d i s jo i n t , s e p a r a t e d , d i s c o n t i n u o u s i n s t a n ts ( B e y s s a d e , 17 ). G u e r o u l t ,
o n t h e o t h e r h a n d , w h o s e e m s t o e q u a t e s e p a r a b i l it y w i t h s e p a r a t i o n , c l a im s
t h a t d i s c o n t i n u i t y is p r e c i s e l y d e f i n e d b y t h e s e t h r e e c h a r a c te r i s ti c s , t o w i t
c o n t i n g e n c y , s e p a r a b i l i t y , a n d m u t u a l i n d e p e n d e n c e ( G u e r . , 2 7 3 / a 9 3 ) . I d o
n o t t h i n k t h i s is a t al l o b v i o u s . B u t a g a i n I s h al l p o s t p o n e d i s c u s s i o n o f t h is
po in t t i ll a l a t e r s e c t i on .
T h e r e is a th i r d w e a k n e s s in t h e t ra d i ti o n a l a r g u m e n t , a g a in p o i n t e d o u t b y
L a p o r t e , t h a t is p e r h a p s e v e n m o r e s t ri k in g . I s n ' t i t c o n t r a r y t o l a n g u a g e a s
w e l l a s g o o d s e n s e , h e as k s , t o d e r i v e t h e d i s c o n t i n u i t y o f ti m e f r o m t h e f a c t
t h a t a f in i te b e i n g i s i n n e e d o f
c o n t i n u o u s
c rea t i on? '''~ Th a t t h i s is a s t r a in on
' Su r cette contingence Descartes fonde le besoin qu'a l '~tre fini d'une cr6ation con-
tinu6e : n'est-il pas con traire ~t la langue co m me au bon sense d'en tir er la discontinuit6 du
temps ? Laporte, 158-59
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C O N T I N U O U S C R E A T I O N , C O N T I N U O U S T I M E 3 5 5
t h e n o r m a l u s a g e o f w o r d s is , I t h i n k , b e y o n d q u e s t i o n . I t is a t t e s t e d b y t h e
v a r i o u s s li ps a n d s li d e s in t e r m i n o l o g y t h a t o n e f i n d s i n p e o p l e ' s d i s c u ss i o n s o f
c o n t i n u o u s c r e a t i o n , w h i c h b e c o m e s c o n t i n u a l c r e a t io n , ,a o r c o n t i n u a l r e -
c r e a ti o n ,, 4 in o r d e r t o fi t t h e s t a n d a r d c o n c e p t i o n o f c r e a t i o n a s a c o n t i n u a l
r e p e t i t i o n o f a d i s c r e t e o r i g i n a l c r e a t i v e a c t. B u t D e s c a r te s h i m s e l f is c a r e f u l
n e v e r t o a s s e r t t h a t t h e r e is a n a c t u a l r e p e a t e d p r o d u c t i o n . H e a l w a y s q u a li f ie s
h i s d e s c r i p t i o n s w i t h a 'q u a s i ' o r a 'v e l u ti ': u n l e s s t h e r e i s s o m e c a u s e w h i c h
c r e a t e s m e a s i t w e r e a g a i n a t th i s m o m e n t , 5 ; u n l e s s t h e r e is s o m e c a u s e
w h i c h e f f e c t s m e a s
i t w e r e
a g a i n a t e v e r y s i n gl e m o m e n t ' 6 ; u n l e s s s o m e
c a u s e, n a m e l y t h e s a m e o n e t h a t p r o d u c e d u s i n t h e f ir s t p l ac e , c o n t i n u o u s l y
s o to s p e a k r e p r o d u c e s u s , t h a t i s, c o n s e r v e s u s . '17 T h i s p r a c t i c e i s e v e n f o l-
l o w e d in t h e F r e n c h t r a n s l a ti o n o f t h e
R e p l i e s
w h e r e D e s c a r t e s ' r e f e r e n c e t o
c o n t i n u a l r e p r o d u c t i o n is a g a i n c a r e f u l l y q u a l i f ie d b y a s o t o sp e a k . ' ' '8 I n
f a c t f o r D e s c a r t e s t h e r e is , f r o m t h e p o i n t o f vi ew o f G o d , o n l y o n e i n di v is i b le
a c t o f c r e a t i o n o f t h e u n i v e r s e , a s G u e r o u l t a dm i ts .~ 9
T h e p r o b l e m h e r e is t hi s. A c c o r d i n g t o D e s c ar te s , a n y t h in g h a s d u r a t i o n
o r e x i st s o n l y as lo n g a s i t is b e i n g c r e a t e d o r p r o d u c e d b y G o d . T h e r e f o r e i f
, s C f . W ah l , 2 3 : D i r e q u e i e s ch o s e s d u ren t , c ' e s t d i r e q u ' e l l e s s o n t c r (~es co n t i n u -
e l l e m e n t ; K e m p S m i t h ,
Studies
1 32 : T h i s a s s u m p t i o n o f t h e d i s c re t en es s o f t i m e D es ca r t e s
p a r t ly c o n c e a l s b y s p e a k i n g o f G o d a s con t i nua l l y co n s e rv i n g u s . ; an d G u e ro u l t ; 2 8 5 / 2 o 2 : co n -
t i n u a t io n i s n o t s y n o n y m o u s w i t h c o n t in u i t y , f o r i t c a n b e a c c o m p l i s h e d b y a r e p e t i t i o n o f t h e
d i s c o n ti n u o u s . T h e s o l e a c t o f c r e a t i o n . . , i s p r e s e n t a t e a c h in s t a n t o f c r e a t io n a s t h e c o n t in u a l
r e n e w a l o f e x i st e n ce . . .
~4 C f . A l a n G a b b e y, F o r c e a n d I n e r t i a , i n S t e p h e n G a u k r o g e r ,
Descar tes: Phi losophy M ath e-
m a t i c s andPhys i c s
(N ew J e r s ey : B a r n es an d N o b l e , 1 9 8 o ) , 3 o 2 n . 4 o . A s h e ack n o w l ed g e s , G ab b ey i s
s i m p ly f o l l o w i n g t h e i n t e r p r e t a t i o n o f D e s c a r t e s ' C o n t i n u o u s C r e a t i o n g i v e n b y G i l so n i n h i s
c o m m e n t a r y o n D e s c a r t e s '
Discourse
( c i ted ab o v e i n n o t e 9) , 3 4 ~ ~ .
~5 Medi tat ions 3 : A T , 7 : 49 : n i s i a l i qu a c a u s a m e q u a s i r u r s u s c r e e t a d h o c m o m e n t u m . S i n c e
I w r o t e t h e f i rs t d r a f t o f t h i s e ss a y a n e x c e l l e n t n e w t r a n s la t i o n o f m a n y o f D e s c a r te s ' i m p o r t a n t
w r i ti n g s h a s b e e n p r o d u c e d b y J o h n C o t t i n g h a m , R o b e r t S t o o t h o f f , a n d D u g a l d M u r d o c h : T h e
Phi losophical W ri t ing s of Descar tes
( C a m b r i d g e : C a m b r i d g e U n i v e r s i ty P r e ss , 1 9 85 ). F r o m n o w o n I
s h a ll ap p e n d r e f e r en c es to t h i s t r an s l a t i o n a s C S M a f t e r e ach o r i g i n a l l an g u a g e c it a t io n . F o r
i n s t an ce , t h i s q u o t a t i o n f ro m t h e M e d i t a ti o n s w o u l d b e c i t ed a s A T , 7 : 4 9 ; C S M .2 : 3 3 .
6 F i r s t Rep l i e s A T , 7 : 1 o 9 ; C S M , 2 : 7 9 : n i s i a l i q u a cau s a m e q u as i ru r s u s e f f i c i a t s i n g u l i s
m o m e n t i s .
7 Pr i nc i p l e s 1 , w A T , 8 :1 3 ; C S M , a : ~o o : n i s i a l i q u a cau s a , n e m p e ead em i l la q u a e n o s
p r i m u m p r o d u x i t , c o n t i n u b v e l u t i r e p r o d u c a t , h o c e st , c o n s et w e t.
s F i r s t Rep l i e s A T : 9 : 8 7 : u n l e s s t h e re w e re i n i t s o m e r ea l an d p o s i t i v e p o w e r , w h i ch , s o t o
s p eak , r ep ro d u ced i t co n t i n u a l l y [ s i c e n ' e s t q u ' i l y a i t en l u i q u e l q u e p u i s s an ce r6 e l l e e t p o s i t i v e ,
i a q u e ll e , p o u r a i n si d i r e , le r e p r o d u i r a c o n t i n u e l l e m e n t ] . T h i s c o r r e s p o n d s t o t h e L a ti n : n i si
a l i qu a p o t e n t i a i n e o s it i p s u m c o n t i n u o v e l u t i r e p r o d u c e n s ( A T , 7 : l
IO
CSM, 2:79)
,9 A n d ce r t a i n l y , t h e v a r i o u s c r ea t i o n s a r e r ea l l y o n l y o n e , s i n ce t h e c r ea t i v e ac t o f G o d i s i n
i t se l f o n e , a n d s i nc e i t w o u l d b e i n c o n c e i v a b l e f o r t h e m t o b e s e p a r a t e d b y in t e r v a ls o f d m e
(Guer . , 28o /a 99 ) .
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3 5 6 J O U R N A L O F T H E H I S T O R Y O F P H I L O S O P H Y 2 6 : 3 J U L Y 1 9 8 8
God's creation or production is continuous, ~ then the duration of each cre-
ated t hing must likewise be continuous.
This creates a dilemma for those holding the discontinuist view, on one
of whose horns some authors have quite clearly become impaled. Jea n Wahl,
for instance, proposes that "creation is continuous because duration is not"
(Wahl, 18). This makes no sense at all in Descartes' philosophy, where things
endure precisely as long as they are created. Wahl tries to extricate himself
by arguing that continuous creation "is not properly speaking a veritable
continuous creation, for then there would have to be a continuous destruc-
tion. ''~ But this idea t hat a cont inuous creation would entail a continuous
dest ruct ion is precisely wrong If creation is truly continuous it will not be
interrupted at all. To say that it is continuous means that at any instant you
pick, you will find the world being created. It is only when conservation is
misunderstood as consisting in a continual reproduction, as the "repeated
alternation of being and non-being" posited by Kemp Smith and Wahl, that
there wou ld be any destruction.
In fact, we may here draw one preliminary conclusion which firmly refutes
the interpreta tion o f Wahl and Kemp Smith. This is that since duration is only
a mod e o f the existence of the universe for Descartes, it follows that there can
be no du rat ion devoid o f existence in his philosophy: there can be no tempo-
ral gaps, and thus n o "a lternation o f states of being and non-being." Descartes
is quite explicit on this point in his exchange with More: "I think it would
imply a contradic tion for us to conceive of some durati on between the destruc-
tion of a forme r world an d the creation of a new one. For, if we were to refer
this duratio n of yours to the succession of divine thoughts or something simi-
lar, this would be an error of the intellect, not a true perception of any
,o G u e r o u l t d e n i e s t h a t c o n t i n u o u s c r e a ti o n m e a n s c o n t i n u o u s p r o d u c t i o n : " C o n t i n u o u s c r e -
a t i o n is n o t a c o n t i n u a l p r o d u c t i o n :
Seipsura non comervare, sumendo creationem pro continua produc-
t ione. Fou rth Replies ( A T , 7 : ~ 4 3 , 1 . 5 " ( G u e r . , ~ 8 o / 3 1 6 n . 1 1 1) . B u t t h i s L a t i n t e x t i s m i s q u o t e d
(c rea t / onem shou ld r ead conservationem) a n d a l s o q u o t e d o u t o f c o n t e x t . D e s c a r t e s i s n o t d e n y i n g
t h a t c r ea t i o n is c o n t i n u o u s p r o d u c t i o n ; h e i s m e r e l y a g r e e i n g w i t h th e a u t h o r o f t h e Fourth
Objectiom
( A r n a u l d ) t h a t G o d c a n n o t b e s a i d to c o n s e r v e h i m s e l f in t h e s a m e s e n s e i n w h i c h h e
c o n s e r v e s t h i n g s : " G o d d o e s n o t i n f a c t c o n s e r v e h i m s e l f , i f w e t a k e c o n s e r v a t i o n t o b e t h e
c o n t i n u o u s p r o d u c t i o n o f t h e t h i n g " ( A T , 7 : 2 4 3; C S M , 2 :1 6 9 ), s in c e G o d c o u l d n o t p r o d u c e
h i m s e l f . A s h e m a k e s c l e a r i n t h e First Replies , D e s c a r t e s u n d e r s t a n d s G o d ' s c o n s e r v a t i o n o f
h i m s e l f " n o t a s w h a t h a p p e n s a s a r e s u l t o f a n y p o s i t i ve in f l u e n c e o f a n e f f i c i e n t c a u s e , b u t a s
c o n s i s t i n g so l el y in t h e f a c t t h a t t h e e s s e n c e o f G o d i s s u c h t h a t i t is i m p o s s i b le f o r h i m n o t t o e x i s t
a lw a y s [ n o n i n t e ll i g i c o n s e r v a t i o n e m q u a e f i a t p e r p o s i t i v u m u l l u m c a u s a e e f f ic i e n ti s i n f l u x u m ,
s e d t a n t ~ m q u b d D e i e s s e n t i a s i t t al is , u t n o n p o s s it n o n s e m p e r e x i s t e r e ] " (First Replies: A T , 7 : 1 o 9 ,
I I . 1 7 - 2 o ; C S M , e :7 9 ) .
9~ W a h l , 1 8: " C e n ' e s t p as u n e p e r p ~ t u e ll e r e p r o d u c t i o n , c e n ' e s t p a s ~ p r o p r e m e n t p a r l e r
u n e v * r i t a b le c r e a t i o n c o n t i n u ~ e , c a r i l f a u d r a i t a l o r s q u ' il y ai t u n e d e s t r u c t i o n c o n t i n u e . "
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C O N T I N U O U S C R E A T I O N , C O N T I N U O U S T I M E 3 5 7
th in g. ~ * D e s c a r t e s ' a r g u m e n t f o r t h i s is t h e e x a c t c o r r e l a t e o f h i s r e j e c t i o n o f
v o i d s i n s p a c e . J u s t a s t h e i d e n t i fi c a ti o n o f m a t t e r a n d ( c o n c r e te ) e x t e n s i o n
r u l e s o u t t h e p o s s i b i l it y o f a v o i d s p a c e , s o t h e i d e n t i f ic a t i o n o f th e ( c o n c r e t e )
d u r a t i o n o f e a c h t h in g
as
a m e r e m o d e u n d e r w h i c h w e c o n c e iv e t hi s t h i n g
i n s o f a r a s i t s t a y s i n e x i s te n c e , 3 p r e c l u d e s t h e p o s s i b i li t y o f a n i n t e r v a l o f t i m e
d e v o i d o f e x i s te n c e . A s G u e r o u l t h i m s e l f d e c l a re s ,
In
f ac t , s i nce ex i s t ence i s
w h a t c o n s t i t u t e s d u r a t i o n , i n t e rv a l s w i t h o u t e x i s t e n c e w o u l d b e i n te r v a ls w i th -
o u t d u r a t i o n ; s o t h e r e c a n n o t b e i n te r v a ls w i th a v o i d d u r a t i o n ( G u e r . , 9 8 o /
1 9 9) . T h u s i t f o l lo w s i m m e d i a t e l y t h a t a n y c o n c e p t i o n o f C a r t e s i a n t i m e a s
c o n t a i n in g g a p s is u n t e n a b l e . T h i s u n a m b i g u o u s l y r u l es o u t t h r e e o f t h e s ix
a l te r n a t iv e s o p e n t o D e s c a r t e s f o r a t im e c o m p o s e d o f i n di v is ib l es , t h e t h r e e
g a p - d i s c o n t i n u o u s m o d e l s t h a t w e c o n s i d e r e d i n t h e fi rs t s e c t io n o f t h e
p a p e r . F o r D e s c a r te s t h e r e c a n n o t b e a n a l te r n a ti o n o f ex i s te n c e a n d n o n -
e x i s t e n c e i n t im e ; t h e r e c a n n o t b e a n y g a p s i n tim e.~ 4
B u t t h e f u r t h e r f a c t t h a t e x i s t e n c e d e p e n d s o n G o d ' s c o n t i n u o u s p r o d u c -
t io n m a k e s a n y d i s c o n t i n u i s t m o d e l o f C a r t e s i a n t im e d i f fi c u l t t o u p h o l d . I f
e x i s t e n c e is a c o n t i n u o u s e f f e c t , t h e n s o is t h e r e s u l t a n t d u r a t i o n o f t h e t h i n g s
c r e a t e d .
C o n n e c t e d w i t h t hi s is t h e e x e g e t i c a l p r o b l e m o f w h y D e s c a r t e s w o u l d i n t ro -
d u c e t h e h y p o t h e s i s o f t h e d i s c o n t i n u i t y o f t im e i n o r d e r t o e x p l a i n t h e e q u i v a -
l e n c e o f c r e a t i o n a n d c o n s e r v a t i o n . S u r e l y i f c r e a t i o n is r e a ll y d i s c o n t i n u o u s ,
t h e n i t c a n n o t b e e q u i v a l e n t t o c o n s e r v a t i o n : r e p e a t e d c r e a t i o n is, o n e w o u l d
t h in k , t h e v e r y o p p o s i t e o f c o n s e r v a t i o n . ( S u p p o s e f o r i n s ta n c e t h a t w e c o u l d
r e c r e a te m a m m o t h s b y c lo n i n g c ells o f t h e ir f r o z e n r e m a i n s, a n d t h a t w e d i d s o
e v e r y t i m e th e s p e c ie s b e c a m e e x t in c t . T o c a ll t h is a c o n s e r v a t i o n p r o g r a m
w o u l d s u r e ly b e r e g a r d e d a s a n a b u s e o f l a n g u a g e o f O r w e l li a n p r o p o r t i o n s . )
O n t h e o t h e r h a n d , i f c r e a t i o n i s t r u l y c o n t i n u o u s ( i.e ., G o d e x e r t s t h e s a m e
f o r c e c o n t in u o u s l y ) , t h e n c r e a ti o n a n d c o n s e r v a ti o n r e a ll y d o a m o u n t t o t h e
s a m e t h i n g , a n d t h e d i s t in c t i o n b e t w e e n t h e m is s o le l y o n e o f re a s o n .
22 D e s c a r t e s t o M o r e , 1 5 A p r i l 1 6 4 9 , A T , 5 : 3 4 3 , 1 1 . 1 - 7 : P u t o i m p l i c a r e c o n t r a d i c t i o n e m , u t
c o n c i p ia m u s a l i q u a m d u r a t i o n e m i n t e r c e d e r e i n t e r d e s t r u c t io n e p r i o r is m u n d i & n o v i c r e-
a t i o n e m . N a m , s i d u r a t i o n e m i s ta m a d s u c c e ss i o n em c o g i t a t io n u m d i v i n a r u m v e l q u i d s i m i le
r e f e r a m u s , e r i t e r r o r i n t e ll e c tf l s, n o n v e r a u l l iu s re i p e r c e p t i o . N o t e t h e a l m o s t i d e n t i ca l f o r m o f
t h i s w o r d i n g t o t h a t o f D e s c a r t e s ' o b j e c t i o n t o a t o m s i n h i s e a r l ie r l e t te r t o M o r e , 5 t h F e b r u a r y ,
1 6 4 9 : A T , 5 :~ ,7 3, q u o t e d b e l o w o n 3 6 7 .
s P r i n c i p l e s I , w A T , 8 : 2 6 ; C S M , 1 : 2 11 .
24 W a h l r e a li z e s t h a t h i s i n t e r p r e t a t i o n c o n t r a d i c t s D e s c a r te s ' a s s e r t i o n o f t h e s e lf -
c o n t r a d i c t o r i n e s s o f a n e m p t y t i m e , b u t n e v e r p r o p e r l y r e s o l v e s t h e d i f f i c u l t y . T h u s o n 2 4 w e
a g a i n f i n d h i m a s s e r t i n g t h a t D u r a t i o n i s t h e f a c t t h a t t h e t h i n g w h i c h e n d u r e s c e a se s t o b e a t
e v e r y m o m e n t ( 7 : 3 7 o ). W a h l ' s r e f e r e n c e h e r e i s t o D e s c a r t e s ' c o n t r o v e r s y w i t h G a s s e n d i . A s w e
s h a l l s e e b e l o w , D e s c a r t e s o n l y a r g u e s t h e r e t h a t i t is p o s s ib l e f o r a t h i n g t o c e a s e t o e x i st a t a n y
m o m e n t .
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3 5 8 J O U R N A L O F T H E H I S T O R Y O P H I L O S O P H Y 2 6 : 3 J UL Y 1 9 8 8
T h u s w e se e t h a t f a r f r o m s u p p o r t i n g t h e i d e a o f a d i s c r e tc t i m e , D e s c a r t e s '
i n t e r p r e t a t i o n o f c o n t i n u o u s c r e a t i o n a c tu a l ly u n d e r m i n e s i t.
3 T H E A R G U M E N T F R O M T H E I N D I V I S I B I L I T Y O F T H E C R E A T I V E A C T
A m o r e p r o m i s i n g d e f e n c e o f t h e cl as si c t h es is is t h a t o f G u e r o u l t . H e a r g u e s
t h a t t h e c r e a t i v e a c ts o f G o d a r e n e c e s s a r il y in d iv i si b le , a n d t h a t c o n s e q u e n t l y
s o m u s t b e t h e m o m e n t s o f th e d u r a t i o n o f e ac h t h in g h e c r e a te s .
T h e a c t o f c r e a t i o n is t h e a c t o f p u t t i n g i n t o d u r a t i o n o r i n t o e x i s te n c e . . . T h i s a c t is
t h e m e a n s b y wh i ch s o m e t h i n g , o n b e i n g p r o m o t e d i n t o d u r a t i o n a n d e x i s t e n c e, a r is e s
o u t o f n o n - b e i n g i n a n i n s t a n t w h i ch i s n o t a f r a g m e n t o f t h e e n d u r i n g c r e a t e d t h i n g ,
b u t t h e m o m e n t o f t h e f r e e a n d i n d iv i si b le d e c is i o n wh i ch e s t ab l is h e s t h e t h i n g i n i ts
d u r a t i o n . . . . I n t h is i n d i vi s ib l e a c t is f o u n d t h e p r i n c i p l e o f t h e r a d i c a l a n d e s s e n ti a l
ind iv i s ib i l i ty o f t empora l ins tan t s , o f the i r d i scon t inu i ty , wh ich i s iden t i ca l to the i r
c o n t i n g e n c y a n d f o u n d e d o n it. ( Gu e r . , ~ 74 /1 94 )
B u t a g a i n t h e r e is s o m e l o g i ca l s l i p p a g e h e r e . D e s c a r t e s d o e s n o t s a y t h a t t h e
a c t o f c r e a t i o n is t e m p o r a l l y i n d i v i s ib l e . I t w i ll o f c o u r s e b e i n d i v is i b le w i t h
r e s p e c t t o it s o w n n a t u r e , j u s t a s G o d h i m s e l f is . B u t t h is is n o t t h e s a m e t h i n g ,
a s D e s c a r t e s m a k e s c l e a r i n h is Conversation with Burman. F o r i n t h e c o n t e x t o f
d i sc u s s i n g t h e i n s t a n ta n e i t y o f th o u g h t , B u r m a n a t t e m p t s t o t r a p D e s c ar t es
w i t h t h e s a m e l o g i c as G u e r o u l t . , 5 S i n c e t h o u g h t i s i n d iv i s ib l e , h e r e a s o n s , i t
m u s t b e i n s t a n t a n e o u s ; f o r i f i t is n o t i n s t a n t a n e o u s , b u t c o n t i n u o u s , i t w ill b e
d i v i s i b l e t o i n f i n i t y . T h i s i s e x a c t l y p a r a l l e l t o G u e r o u h ' s a r g u m e n t f r o m t h e
i n d iv i s ib i li t y o f G o d ' s c r e a t i v e a c t t o i t s i n s t a n t a n e i t y , s o D e s c a r t e s ' r e p l i e s w i ll
b e p a r t i c u l a r l y i n s t r u c t i v e .
B u r m a n b e g i n s h is a r g u m e n t w i t h a n a t t e m p t t o d e m o n s t r a t e a c i rc u l ar i ty
i n D e s ca r te s ' s e c o n d p r o o f o f t h e e x i s t en c e o f G o d i n th e T h i r d M e d i t a t io n ,
p o i n t i n g o u t t h a t o n e c o u l d n o t p a y a t t e n t i o n t o a ll t h e a x i o m s o f t h e p r o o f a t
o n c e , si n ce " e v e r y t h o u g h t o c c u r s in s t a n ta n e o u s l y , a n d t h e r e a r e m a n y
t h o u g h t s t h a t c o m e to m i n d i n t h e p r o o f " ( C W B , 1 1: 6 1 1 . 1 2 - 1 3 ; A T , 5 : 1 4 8 ) .
T o t h is D e s c a r t e s r e p l i e s: " i t is f a ls e th a t t h o u g h t o c c u r s i n s t a n t a n e o u s l y ; f o r
a ll m y a c ts t a k e p l a c e in t i m e , a n d I c a n b e s a id t o b e c o n t i n u i n g a n d c a r r y i n g
o n w i t h t h e s a m e t h o u g h t f o r s o m e t i m e " ( ib id ). N o w I s u g g e s t t h a t e x a c tl y t h e
s a m e is t r u e o f G o d ' s a c t o f c r e a t i o n . A l t h o u g h h e i s c r e a t in g t h e w o r l d a t e a c h
i n s ta n t , j u s t a s I a m t h i n k i n g a t e a c h i n s t a n t , t h e a c t o f c r e a t i o n i t s e lf is c o n t i n u -
o u s o v e r t im e .
B u t G u e r o u l t c a n n o t a c c e p t th is . R e m i n d i n g u s th a t " t h e p r o p e r t i e s o f t h e
c r e a t u r e a r e n o t n e c e s s ar i l y th e s a m e a s t h e p r o p e r t i e s o f th e C r e a t o r " ( G u e r . ,
9 Descartes' Conversation withBurman translated with introduction an d comm entary by Joh n
Cottingham (Oxford: C larendon Press, 1976), comm ent num ber 11, page 6. H ereafte r cited as
"CW B" with page num ber.
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C O N T I N U O U S C R E A T I O N , C O N T I N U O U S T I M E 3 5 9
2 8 5 /2 O I - -2 ) , h e u r g e s u s t o a c c e p t t h a t t h e r e a r e f o r D e s c a r t es t w o f u n d a m e n -
t al ly d i f f e r e n t w a y s o f c o n s i d e r i n g t im e . T h e r e is " t h e p o i n t o f v i ew o f c r e a t e d
t h in g s , o r o f t h e a b s t r a c t " ( 2 8 o - 8 1 / 1 9 8 - 9 9 ) , w h e r e o n e s ay s t h a t a ll t h o u g h t
a n d m o t i o n o c c u p y a c o n t i n u o u s t i m e ( 2 7 5 h 9 5 & ff ) ; a n d , o n t h e o t h e r h a n d ,
t h e r e is " t h e p o i n t o f v i e w o f c r e a t i o n a n d o f t h e c o n c r e t e ," w h e r e , o n t h e
c o n t r a r y , t i m e is c o n c e i v e d a s a " r e p e t i t i o n o f in d i v is i b le a n d d i s c o n t i n u o u s
c r e a t i v e i n st a n t s" ( 2 7 5/ 1 9 5) , a n d a ll t e m p o r a l m o t i o n a r i se s f r o m " t h e r e p e t i -
t i o n o f i n s t a n t s o f m o t i o n " (2 8 1 / 1 99 ).2 6
B u t D e s c a r t e s r e l ie s o n n o s u c h d i s ti n c ti o n b e t w e e n t h e p o i n t s o f v i ew o f
c r e a t e d a n d c r e a t i o n in hi s e x c h a n g e w i th B u r m a n . F o r w h e n B u r m a n n o w
c o n f r o n t s h i m w i t h t h e o b j e c t i o n t h a t i f t h o u g h t is n o t i n s t a n t a n e o u s , b u t
c o n t i n u o u s t h r o u g h t i m e , t h e n " [ it ] w il l b e e x t e n d e d a n d d i v is i bl e ," h e r e p l ie s :
" N o t a t a ll . T h o u g h t w i ll i n d e e d b e e x t e n d e d a n d d i v is i b le w i t h r e s p e c t t o i ts
d u r a t i o n , s i n c e i ts d u r a t i o n c a n b e d i v i d e d i n t o p a r t s . B u t i t is n o t e x t e n d e d
a n d d i v is i b le w i th r e s p e c t t o i ts o w n n a t u r e , s i n ce it s n a t u r e r e m a i n s u n e x -
t e n d e d . I t is t h e s a m e w a y w i th G o d : w e c a n d i v i d e h is d u r a t i o n i n t o a n i n fi n i ty
o f p a r ts , e v e n t h o u g h G o d h i m s e l f is n o t t h e r e f o r e d i vi si b le " (C W B , i 1: 6 ; A T ,
5 : I 4 8 ) .
T h u s , f a r f r o m c o n t r a s t i n g t h e p o i n t o f v i ew o f t h e c r e a t o r w i t h th a t o f t h e
c r e a t e d , D e s c a r t e s e x p l i c i tl y p o si t s t h e i r a n a l o g y . H i s d i s ti n c t io n h e r e i s r a t h e r
b e t w e e n c o n s i d e r in g s o m e t h i n g - - a t h o u g h t , a n a ct , o r e v e n G o d h i m s e l f in
r e s p e c t o f it s o w n n a t u r e , w h e n i t is n e c e s s a r i l y o n e t h i n g , i n d iv i s ib l e ; a n d
c o n s i d e r i n g t h e s a m e t h i n g i n re s p e c t o f it s d u r a t i o n , i n w h ic h r e s p e c t i t c a n b e
r e g a r d e d a s c o n t i n u o u s , a n d t h u s i n d e f in i t e l y d i vi si bl e. T h e r e is t h e r e f o r e n o
r e a s o n w h y t h e s a m e a n a l y si s s h o u l d n o t a p p l y a ls o to G o d ' s a ct o f c r e at i o n :
t h e r e is o n l y o n e s u c h a c t , w h i c h a l t h o u g h u n e x t e n d e d a n d i n di v is ib l e w i t h
r e s p e c t t o i t s o w n n a t u r e , is n o n e t h e l e s s e x t e n d e d a n d d iv is ib le w i th r e s p e c t t o
i ts d u r a t i o n , w h i c h i s c o n t i n u o u s ( c o n t i n u o u s c r e at i on ) . T h i s m e a n s t h a t a t a n y
i n s t a n t w e p i c k , t h e r e is c r e a t i o n , a s e v i d e n c e d b y t h e i n s t a n t a n e o u s a c ti v it y o f
c o r p o r e a l t h i n g s . 2 7
9 Th is distinction o f Gueroult 's between the two "points of view" is derived from He nri
Bergson's influential interpretation o f Descartes in his Creative Evolution, transl. Arthur Mitchell
(New York: He nry H olt & Co . , 1911) . According to Bergson, the abstract world of m odern
mathematical physics "is a world that dies and is reborn at every insta nt--th e w orld which Des-
cartes was thinking of when he spoke of continued creation" (22). But this cinematographical
conception of tim e is complemented in Descartes ' thoug ht by "a time in which there is invention,
creation, true succession" (Bergson's real duration), wh ich is supp orted by "a God w ho is unceas-
ingly renewing the creative act" (345)- H ad Descartes followed out this point o f view, "creation
would have appea red n ot simply as continued, but also as continuous (346).
,7 Gue rou lt quotes Descartes' "instantaneous activity signifies creation", fro m his
Olympian
Matters, A T, lo:218; CSM , 1: 5, in the belief that it supports his claim that a cts of creation a re
instantaneous an d discontinuou s. But this confuses the instantaneous activity of bodies wi th the
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36
J O U R N A L O F T H E H I S T O R Y O F P H I L O S O P H Y 2 6 : 3 J U L Y
1988
S o f a r, t h e n , m y a r g u m e n t s u p p o r t s L a p o r t e o v e r G u e r o u l t . I r o n ic a ll y ,
t h o u g h , t h e s e s a m e c o n s i d e r a t i o n s c o n c e r n i n g t h e i nd iv i si b il it y o f c r e a t io n a r e
e q u a l l y f a ta l t o L a p o r t e ' s a r g u m e n t f o r t h e c o n t i n u i t y o f t im e . F o r h a v i n g
a r g u e d a g a in s t t h e a c c e p t e d v ie w th a t t i m e is d i s c o n ti n u o u s , c o m p o s e d o f
i nd i vi si bl e m o m e n t s , L a p o r t e r e b o u n d s t o t h e o t h e r e x t r e m e : h e c la im s t h a t
D e s c a r t e s ' m o m e n t s a r e t h e m s e l v e s e x t e n d e d a n d i n d e f i n i t e l y d i v i s i b l e . T h i s
o p e n s u p h is w h o l e p o s i t io n t o r e f u t a ti o n , w h i c h G u e r o u l t d u l y p r o v i d e s w i th
s o m e d e v a s t a t i n g c r i ti ci sm s b a s e d o n D e s c a r t e s ' p h y s ic s . B e f o r e e x a m i n i n g
t h e s e , h o w e v e r , it is w o r t h n o t i n g t h a t L a p o r t e ' s m a i n a r g u m e n t f o r t h e d iv is i-
b ili ty o f m o m e n t s c o n t a i n s m u c h t h e s a m e e r r o r a s G u e r o u l t ' s a r g u m e n t f o r
thei r indivis ibi l i ty .
H i s r e a s o n i n g i s a s f o l l o w s . D e s c a r t e s e x p l i c i t l y s a y s ( i n C W B c i t e d a b o v e )
t h a t all t h o u g h t o c c u p i e s a n e x t e n d e d d u r a t i o n , s o t h e i n d iv i si b le
intui tus
p r e v io u s l y t h o u g h t t o b e i n s t an t a n e o u s , m u s t b e u n d e r s t o o d a s t a k in g p l a c e
o v e r a m o m e n t w h i c h is i ts e l f e x t e n d e d : S o l et u s n o l o n g e r s p e a k o f in s t a n ts
i n t h e a t o m i c s e n s e o f t h e t e r m . ' ', s
T h i s a r g u m e n t f o u n d e r s o n t h e s a m e r e e f a s G u e r o u h ' s , n a m e l y t h e f ai lu r e
t o p a y h e e d t o D e s c a r t e s ' d i s t in c t i o n b e t w e e n t h e i nd i vi si bi li ty o f t h e
intui tus
w i t h r e s p e c t t o it s o w n n a t u r e , a n d i ts d iv i si bi li ty a n d e x t e n d e d n e s s i n d u r a -
t i o n . O n e t h o u g h t c a n t a k e p l a c e o v e r a n e x t e n d e d t i m e w i t h o u t b e i n g d i v i s i -
b le q u a t h o u g h t . T h e f a c t t h a t o n e c a n b e i n th e a c t o f th i n k in g t h e t h o u g h t a t
a n y g i v e n i n s t a n t d o e s n o t i m p l y t h a t t h a t i n s t a n t i s e x t e n d e d .
4 C O N C R E T E D U R A T I O N V S . A B S T R A C T T I M E
A t t h is p o i n t w e s h o u l d l o o k a l it tl e m o r e c l o s e ly a t D e s c a r t e s ' d i s t in c t i o n
b e t w e e n c o n c r e t e a n d a b s t r a c t ti m e , a s p r e s e n t e d b y h i m i n h is r e p l y to
G a s s e n d i ' s c r i ti c i sm s o f t h e
Meditations.
F o r a m a j o r s o u r c e o f t h e e r r o r u n d e r -
l y in g G u e r o u l t 's a r g u m e n t f o r t h e d i s cr e te n e s s o f t im e s te m s , in m y v ie w , f r o m
t h e p e c u l i a r w a y in w h i c h h e d e p i c t s t h is d is t in c t io n b e t w e e n c o n c r e t e a n d
a b s t r a c t ti m e a s c o r r e s p o n d i n g t o a d is t in c t io n b e t w e e n t h e p o i n t s o f v ie w o f
c r e a t o r a n d c r e a t e d . A s I s e e i t, t h e d i s t i n c t io n is f a r l e ss f a n c i f u l . D e s c a r t e s
c rea t i v e ac t iv i t y o f G o d t h a t t h i s s ig n i f ie s ; an d , m o re i m p o r t an t l y , i t a l s o co n fu s e s ac t iv i t y w i t h ac t .
F o r w h i l s t t h e ac t i v i t y o f s u b s t an ces ( t h e co n a t u s o f b o d i e s an d t h e t h i n k i n g o f s ou l s) m ay b e s a i d
t o b e i n s t an t an e o u s , i n t h a t t h e s u b s t an ces a r e ac t i n g a t ev e ry i n s t an t , t h e ac t s t h em s e l v es (m o t i o n ,
t h o u g h t ) t a k e p l a c e o v e r a p e r i o d o f c o n t i n u o u s t i m e . S o G u e r o u h i s q u i t e w r o n g t o s ay th a t L i k e
l i g h t , t h o u g h t is i n s t an t an eo u s (G u e r . , 2 8 1 /1 9 9 ) .
, s N e p a r l o n s d o n c p l u s d 'i n s t an t s au s en s a t o m i q u e d u t e rm e , n i d e p en s 6 e i n st an t an 6 e .
T o u t e p e n s ~ e , d it e x p r e s s 6 m e n t D e s c a r te s , a ' f i e u d a n s l e te m p s , e t e l le o c c u p e d u t e m p s . E t
p a r t a n t , l e p r 6 s e n t d e l a p e n s ~ e n e p e u t d 6 s i g n e r . . , q u ' u n s e g m e n t tr 6 s c o u r t d e d u r 6 e .
L ' i n t u i tu s , q u i e s t I ' a c t e d e p en s 6 e co r r e s p o n d an t ~t l a p rae sens ev/ den t/ a, en v e l o p p e q u e l q u e d u r6 e
d an s s o n u n i t 6 (L ap o r t e , 1 59 ) .
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C O N T I N U O U S C R E A T I O N , C O N T I N U O U S T I M E 3 61
d o e s n o t a c tu a l ly u s e t h e t e r m ' c o n c r e t e '. B u t w h a t h e o p p o s e s to a b s tr a c t ti m e
is t h e d u r a t i o n o f t h e e n d u r i n g t h in g . T h u s a c o n c r e te d u r a t i o n is s im p l y th e
s p ec if ic d u r a t i o n o f s o m e e n d u r i n g s u b s ta n c e , a s o p p o s e d t o th e i d e a o f g e -
n e r i c t i m e o r d u r a t i o n - i n - g e n e r a l . T h e l a t t e r i s a n i d e a l c o n c e p t , f o r m e d b y
a b s t r a c t io n f r o m t h e d u r a t i o n s o f a ll p a r ti c u l a r s u b s t a n c e s, j u s t a s s p a c e o r
e x t e n s i o n - i n - g e n e r a l is a n a b s t r a c t c o n c e p t f o r m e d b y a b s t r a c t in g f r o m a ll t h e
p a r t i c u l a r e x t e n s i o n s o f p i e c e s o f e x i s t in g e x t e n d e d m atte r.~ 9
T h u s i n D e s c a r t e s ' p h i l o s o p h y a n a b s t r a c t t h i n g , f a r f r o m b e i n g a c r e a t e d
t h i n g a s G u e r o u l t w o u l d h a v e i t, is n o t s o m e t h i n g w h i c h c a n e x i s t b y i ts e l f i n
t h e w o r l d ; it is s o m e t h i n g i n c o m p l e t e , l ik e a n u m b e r c o n c e i v e d a p a r t f r o m
t h i n g s n u m b e r e d , o r a s u b s t a n c e c o n c e i v e d a p a r t f r o m its a tt ri bu te s .3 o C o r r e -
s p o n d i n g l y , t h e t e r m ' c o n c r e t e ' w o u l d s i g n if y a n a c t u a ll y e x i s ti n g t h i n g a n d
t h e a t t r i b u t e s a s s o c i a t e d w i t h i t, a t h i n g k e p t in e x i s t e n c e b y G o d ' s c r e a t i v e
p o w e r . T h u s , i t is t r u e , t h e r e is s o m e c o n n e c t i o n w i t h G u e r o u l t ' s c r e a t io n o f
e x i s te n c e . B u t a c o n c r e t u m i s n e v e r t h e l e s s t h e c r e a t e d t h i n g , n o t t h e th i n g
f r o m t h e p o i n t o f v i e w o f t h e c re a t o r . G u e r o u l t ' s d i st in c t io n b e t w e e n t h e t w o
p o i n t s o f v i e w o w e s m u c h t o B e r g s o n , b u t l it tl e t o D e s c a r te s .
N e v e r t h e l e s s , e v e n c o m m e n t a t o r s w h o w o u l d f i n d li tt le o b j e c t i o n a b l e i n m y
r e n d e r i n g o f th e a b s t r a c t / c o n c r e t e d i s t in c t io n h a v e s e e n th e w o r d i n g o f D e s -
c a r t e s ' r e p l y t o G a s s e n d i a s s u p p o r t i n g t h e c la s si c t h es is .3 ' S o l e t u s l o o k a l it tl e
m o r e c l o s e l y a t D e s c a r t e s ' a p p e a l t o t h is d i s ti n c t i o n i n h i s c o n t r o v e r s y w i t h
G a s s e n d i .
G a s s e n d i o b j e c t e d to t h e p a s s a g e in t h e T h i r d M e d i t a ti o n q u o t e d a b o v e o n
t h r e e c o u n t s : f i rs t, th a t t h e p a r t s o f t im e , f a r f r o m b e i n g m u t u a l l y i n d e p e n -
d e n t o r s e p a r a b l e , f o r m a n i n v io l a b le s e ri e s a n d c o n n e c t i o n , w i t h t h e p o s t e -
r i o r p a r t s d e p e n d i n g o n t h e p r io r.a 2 S e c o n d l y , s in c e th e p a r t s o f ti m e a r e
e x t e rn a l , s uc c es s iv e a n d n o t a ct iv e , t h e ir d e p e n d e n c e o r i n d e p e n d e n c e o n
9 Descartes also acknowledges that time may be "distinguished from du ration taken in the
general sense" ( P r i n c i p l e s , 1, w AT, 8:27; CSM, 1:212); this is time in the sense of "the measu re
of motion," a mea sure which we abstract from the durati ons of certain privileged motions, such as
the day or t he year. But, as he makes clear, in distinguishing this time from duration- in-general ,
"noth ing is there by adde d to durat ion in its general sense except for a mode of thou ght" (ibid.).
This is still, even as a mathematical quantity, an ideal concept abstracted from enduring sub-
stances. It is not a "universal frame," as Beyssade calls it (Beyssade, 13~). One can not say, as he
does, that Descartes' time "is a form, empty as such, and that the durations are the different
contents that come to fill it" (ibid.). This is the "container" time o f Gassendi and Newton.
so Cf. Kemp Smith's discussion, N e w S t u d i e s , 312--13; and Descartes' letter to Clerselier,
January 12, 1646, AT, 9:i.216.
3, Cf. Ke mp Smith, N e w S t u d ie s , on th e "merely abstract," 31 ~-13; and ~o3-o4 : I t [the thesis
that Descartes uphol ds an atomic view of time] finds supp ort in the w ording of Descartes' reply to
the writer of the F i f t h O b j e c t i o n s .
~" Pierre Gassendi, F i f t h O b j e c t i o n s , AT, 7:3 ol; CSM, ~:2o 9.
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36~ J O U R N L O F T H E H I S T O R Y O F P H I L O S O P H Y ~6: 3 JULY 198 8
e a c h o t h e r i s n o m o r e r e l e v a n t to th e p r o d u c t i o n o r r e p r o d u c t i o n o f t h in g s i n
t im e t ha n th e p r o d u c t i o n o r r e p r o d u c t i o n o f s o m e r o c k is a f f e c te d b y th e
f l o w o r p a s s a g e o f t h e p a r t s o f a r iv e r w h i c h f lo w s p a st it ( A T , 7 : 3 o l ;
C S M . I I . 2 o 9 - 1 o ). T h i r d l y , y o u r e x i s te n c e i s c o n t i n g e n t f r o m o n e m o m e n t t o
a n o t h e r n o t b e c a u s e a c a u s e is r e q u i r e d t o c re a t e y o u a n e w , b u t b e c a u s e t h e r e
is n o g u a r a n t e e t h a t t h e r e i s n o t s o m e c a u s e p r e s e n t w h i c h m i g h t d e s t r o y y o u ,
o r th a t y o u d o n o t h a v e s o m e i n f i rm i t y w i t h i n y o u w h i c h w o u l d f in a l ly r e su l t i n
y o u r d e m i s e ( ib i d .) .
T h i s l as t o b j e c t i o n c o n t a i n s t h e k e r n e l o f G a s s e n d i' s d i f f e r e n c e o f o p i n i o n
w i t h D e s c a r t e s . T h e g i s t o f it i s t h a t w h i l s t G a s s e n d i r e g a r d s i t a s n e c e s s a r y f o r
e v e r y e x i s t e n t t o h a v e a c a u s e w h i c h b r i n g s i t i n t o e x i s t e n c e , h e d o e s n o t s e e it
a s n e e d i n g a n y c a u s e t o k e e p it i n e x is t e n c e . O n c e a s u b s t a n c e i s c r e a t e d , t h e n
( to u s e G a s s e n d i ' s m e t a p h o r ) t h e w a t e r s o f t i m e f l o w p a s t it u n t il s o m e f u r t h e r
c a u s e t a k e s it o u t o f e x i s t e n c e T o t h i s D e s c a r t e s r e p l ie s :
When you deny that we con t inual ly need the in f luence [ influxus]3~ of the f i rs t cause fo r ou r
conservation you are den yin g a thing which all the Metaphysicians affirm as manifest,
but which the unlearned often fail to think of, because they attend only to causes of
coming to be [secundum f ier i ] but not to those of being [secundum esse] .. . God is the
cause of created things, not only se c undum f i e r i but also se c undum e s se and so he must
always influence [influere] the effect in the same way in order for it to be conserved.
And this is clearly demonstrated by what I explained about the independence of
the parts of time, which you try in vain to evade by proposing the necessi ty o f the sequence
which exists between the parts o f time cons ider ed in the abstract. It is not this that is at issue
here, b ut rat her the time or d urati on of the en dur ing thing, and you will not deny that
the individua l mom ents of this time could be separated f rom those next to them, that
is, that the en du ri ng thi ng could at an y single mo me nt cease to exist.34
In this reply Descartes does not asser t that every mom ent of concrete du rat ion
( the dura t ion o f the endur i ng th ing ) is ac tua l ly separa ted f rom the nex t , as
ss The term
inf luxus
literally means 'inflow', and is echoed later in this passage by the verb
influere 'to flow into'. According to Alan Gabbey, in an erudite discussion in his Force and
Inertia (3Ol-3O2 nn. 3 l, 38) Descartes' puzzling introduction of this term into his paraphrase of
Gassendi's objection evokes not only the inf luxus divinus of Aquinas and Thomist theologians, but
possibly also the inf luxus astrorum of the astrologers. Gabbey concludes that no English term is rich
enough to convey all these senses. But in the Chambers Tw entieth Century Dictionary 'spiritual influx'
and 'power of producing an effect' are both given as senses of the word 'influence',along with the
astrological sense, so I have translated it accordingly.
s4 AT, 7:369-7o, reading definiri for AT's impossible definere in the last phrase. Note that my
translation differs in many respects from Cottingham's here. In particular, I demur from his
translation ofpartes as divisions, of conservare as keeps in existence (thus masking the origin of
the conservation laws of modern physics in Descartes' philosophy), and of inf luxus as continual
action (CSM, 2:254-5). Ariew's translation of Gueroult's render ing of this passage likewise needs
amending here: his could not deny that the movements cannot be separated should read could
not deny that the moments could be separated (Guer., chap. 6, p. 316 n. lO5). Movements
should also be corrected to moments in the corresponding text (Guer., 279/198).
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C O N T I N U O U S C R E A T I O N , C O N T I N U O U S T IM E 3 6 3
G u e r o u l t a l l e ge s. a s T h e e m p h a s i s is r a t h e r o n t h e c o n t i n g e n c y o f th e i r c o n n e c -
t io n , o n t h e f a c t t h a t t h e y c o u l d b e s e p a r a t e d , t h a t th e e n d u r i n g t h i n g c o u l d a t
a n y m o m e n t c e a s e t o e x i s t. E v e n i n t h e f u r t h e r q u o t a t i o n G u e r o u l t c i t e s i n
s u p p o r t o f h i s c l a i m , D e s c a r t e s ' e m p h a s i s is o n t h e p o s s ib i li ty o f s e p a r a t i o n o f
t h e p a r ts o f t i m e : I c o n s i d e r t h e p a r t s o f t i m e to b e s e p a r a b l e f r o m o n e
a n o t h e r . a ~ F o r w h a t D e s c a r t e s is c o n c e r n e d t o r e f u t e is n o t t h a t th e d u r a t i o n s
o f t h i n g s a r e c o n t i n u o u s , b u t t h e i d e a t h a t t h e i r c o n t i n u o u s e x i s t en c e d o e s n o t
r e q u i r e a c au s e. a7 I t is a g r e e d t h a t a n e n d u r i n g t h i n g h a s a d e f i n i t e e x i s t e n c e a t
a n y g i v e n m o m e n t o f it s d u r a t i o n . Y e t s in c e t h is e x is t en c e d e p e n d s o n G o d ' s
c o n t i n u o u s a c t io n , a n d a t h i n g h a s d u r a t i o n o n l y a s l o n g a s i t e x is ts , t h e r e is n o
m o m e n t t h a t is n o t c o n t i n g e n t : w i t h o u t G o d ' s a c t io n t h e r e w o u l d b e n o l i nk b e -
t w e e n o n e m o m e n t a n d t h o s e t h a t fo l lo w it. B u t p r o v i d e d G o d a c t s c o n t i n u -
o u s l y o v e r a n e x t e n d e d t im e , a b o d y w il l h a v e a c o n t i n u o u s d u r a t i o n . I n t h e
w o r d s o f B e y s s a d e , T h e c o n t i n u i t y o f a n u n d i v i d e d p a r t , e i t h e r o f b o d y o r
d u r a t i o n , a lw a y s d e p e n d s o n a f re e a c t o f G o d ; t o c o n t i n u o u s c r e a t io n t h e r e
c o r r e s p o n d s t h e a c t b y w h i c h G o d k e e p s u n i t e d r e a l ly d is t i n c t p a r t s t h a t h e
c o u l d d i v i d e. a a
5 . C O N T I G U I T Y
W e h a v e s e e n t h a t n o n e o f th e s t a n d a r d a r g u m e n t s f o r t h e c la ss ic t he s i s
s u c c e e d s i n p r o v i n g C a r t e s i a n t i m e d i s c o n t i n u o u s . B u t m i g h t i t n o t s ti l l b e so ,
n o n e t h e l e s s ? I f i t is , t h e n g i v e n t h e u n t e n a b i l i t y o f t h e g a p - d i s c o n t i n u o u s
m o d e l s d i sc u s s e d a b o v e , t h e o n l y r e m a i n i n g m o d e l s f o r a d i s c o n t i n u o u s t im e
a r e t h o s e i n v o l v i n g c o n t i g u o u s i n d i v i s ib l e s , t h e s e in d i v i s ib l e s b e i n g e i t h e r f i-
35 Th e creative mo m en t of each end ur ing thin g is . . . enclosed within itself, radical ly sepa-
ra ted f ro m a l l o t he rs [Le mom ent c r6a teur de chaque chose duran t e e s t . . , enfe rm~ en l u i m&ne ,
radica lement s~par6 de tous les aut res] (Guer. , ~74h94 ) .
36 Co nside ro tem por is partes a se m utu o sejungi posse,
Reply to the Fir s t Objec t ions
A T ,
7:1 o 9, 11 .9 - t o; CS M, 2: 7 8; c i ted by Gu eroui t on 274/315, n. 81.
37 This is no idle bo ne o f con tention. It reflects a deep differen ce in theological doctrine, an d
a corresp ond ing deep di fference in physics . Th e key issue is whe ther c rea ted things n eed G od's
ac tion on them cont inuously, as a m at te r of course , o r w hether hi s act ion o n them need only be
intermittent. In this contex t Descartes w ould be k een to prov e that God 's action is necessary at any
single mo m en t of t ime; b ut n ot tha t his act ion is really discontinuous. But since in th e seventeenth
cen tury causes w ere always closely associated w ith forces, this also makes fo r a crucial d ifferenc e
in the res ultant physics of the two rival metaphysical viewpoints. Descartes bel ieved that a force
was always necessary to conserve a given thing in existence, and in this Leibniz endorsed him
fully; whereas N ew ton, fol lowing Bar row and Gassendi in maintaining the ind epe nd enc e of
du rat ion fro m existence, rejected the idea o f a c a u s a s e c u n d u m e s s e especially in its Leibnizian
manifestation as v i s v i v a o r action cr~atrice.
38 Beyssade, 35o : La continuit6 d'u ne part ie indivise, corp s ou dur6e, d6p end to ujou rs d'u n
acte l ibre d e Dieu, ~t la cr6at ion co ntin u& cor resp on d l 'acte par lequel Dieu, maintient unies des
parties r& llem en t distinctes qu ' i l po urra i t diviser.
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364
JOURN L OF THE HISTORY OF PHILOSOPHY
26:3
JULY
988
nite or actually infinitely small, or perhaps points. In this section I want to
discuss whe the r a mode l based on such a contiguity/continuity distinction is a
real option for Descartes. The n in the following sections I shall turn to the
question of time atoms, and whether there exists any additional textual evi-
dence for Descartes' having coun tenanced them.
According to the traditional Aristotelian distinction, two parts o f a whole
are contiguous if their extremities are together, but continuous if they have
an extremity in common. T ha t is, the parts of a continuous whole are the parts
into which it could be divided (i.e., merely potential parts), whilst the parts o f
an aggregate of con tiguous indivisibles would be these indivisibles themselves,
the actual parts into which it is divided. A time divided into such contiguous
indivisible parts appears to be what Guerouh has in mind when he writes of
discontinuity being synonymous with the characteristics of separateness, con-
tingency, and mutual in dependence.
Might Cartesian time be discontinuous in this sense? I shall argue that this
is most unlikely. In the first place, Descartes had little patience with the tradi-
tional distinction between contiguity and con tinuit y--a nd for good reason, as
we shall see, since the distinction is not even applicable in its Aristotelian form,
given Descartes' equation of matter with space, and time with concrete dura-
tion. But secondly, even supposing some sort o f distinction between contigu-
ous Cartesian durations and continuous ones could be made, it would be
inapplicable to point-like indivisibles, since these have no endpoints. The im-
portance of this is that these are the only type o f indivisibles countenanced by
Descartes, as I shall argue in the next section.
Descartes nowhere explicitly discusses contiguity in connection with time.
But he does allude to bodies being contiguous in the sixth of the Repl ies , and in
the Conver s a ti on w i t h Bu r m an . Burman uses this text to initiate a discussion of
Descartes' atti tude to the t radit ional distinction.
In the text in question Six th R eply , AT, 7:433), Descartes claims that when
one body contains another in such a way that they possess a surface in com-
mon, this surface can equally well be rega rded as the extremity of one body as
the oth er in the sense in which those bodies are said to be contiguous whose
extremities are together. Bur man rightly criticizes him on this claim, pointing
out that calling the contain ing and contained contiguous is in accordance
with the co mmon way of talking, where in the Schools they call bodies contigu-
ous if their extremities are together, but not with the truth of the matter at
hand, for in this case there is only one extremity common to both. s9 Thus
according to the Aristotelian distinction, Descartes' two bodies, the containing
39 CWB,47; AT, 5:164: Haec non dicuntur secundum rei veritatem, nam sic una solhm est
extremitas, quae utriusque est communis,sed secundhmvulgarem dicendi modum, quo in Sco|is
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C O N T I N U O U S C R E A T I O N , C O N T I N U O U S T IM E 3 6 5
a n d t h e c o n t a in e d , w o u l d b e c o n t i n u o u s r a t h e r t h a n c o n t i g u o u s , s in c e t h e
f a c t t h a t t w o b o d i e s h a v e a n i d e n t ic a l e x t r e m i t y s e e m s q u i t e s u f f i c ie n t f o r
c o n t i n u i t y ( ib id .) . B u t in t hi s c a se , B u r m a n a sk s , w h a t a r e c o n t i g u o u s b o d i e s
g o i n g t o l o o k li ke ? D e s c a r t e s ' r e p l y is c u r t , b u t t o t h e p o i n t : H o w o t h e r p e o p l e
w o u l d d e f i n e t h e s e t h i n g s i s a l l t h e s a m e t o m e ; I c a l l t w o b o d i e s c o n t i n u o u s
w h e n t h e i r s u r fa c e s a r e j o i n e d t o e a c h o t h e r s o i m m e d i a t e l y t h at t h e y b o t h
m o v e w i th o n e a n d t h e s a m e m o t i o n o r b o t h c o m e to r es t t o g e t h e r ; a n d t h o se
t h a t b e h a v e o t h e r w i s e a r e c o n t i g u o u s ( ib id .) .
I m p l i c i t in t h is p a r t i c u l a r e x c h a n g e i s t h e r e a l iz a t io n b y b o t h m e n t h a t t h e
A r i s t o t e li a n d i s t i n c t i o n b e t w e e n c o n t i g u i t y a n d c o n t i n u i t y i s i m p o s s i b le t o
m a i n t a i n w i th i n t h e C a r t e s ia n f r a m e w o r k . F o r t hi s w o u l d r e q u i r e o n e t o b e
a b le t o d i s t i n g u i s h b e t w e e n t h e e n d p o i n t s o f tw o b o d i e s b e i n g t o g e t h e r a t t h e
s a m e p o i n t i n sp a c e , a n d t h e i r b e i n g t h e s a m e p o i n t . B u t D e s c a r t e s d e n i e s t h a t
t h e r e i s a r e a l d i s t i n c t i o n b e t w e e n b o d y a n d s p a c e : a s h e s a y s i n t h e
P r i n c i p l e s ,
T h e r e i s n o r e al d i f f e r e n c e b e t w e e n s p a c e . . , a n d t h e c o r p o r e a l s u b s ta n c e
c o n t a i n e d i n it , b u t o n l y a d i f f e r e n c e i n t h e w a y w e a r e a c c u s t o m e d t o c o n c e i v e
o f t h e m (w o ; A T , 8 : 4 5 ). B u t t h is m e a n s t h a t t h e r e i s l ik e w is e o n l y a c o n c e p -
t ua l d i f f e r e n c e b e t w e e n t h e e x t r e m i t y o f a b o d y a n d t h e p o i n ts o f s p a c e it
o c c u p i e s. T h u s t h e A r i s t o te l i a n d i s t i n c ti o n f a il s t o r e p r e s e n t a r ea l d i f f e r e n c e :
t h e e x t e n s i o n o f t h e w h o l e u n i v e r s e is c o n t i n u o u s , e v e n i f s o m e b o d i e s i n it a r e
c o n c e i v e d as m e r e l y c o n t i g u o u s w i th o n e a n o t h e r .
B u t p r e c i s e l y a n a l o g o u s c o n s i d e r a t i o n s a p p l y t o ti m e , s i n ce j u s t a s s p a c e o r
e x t e n s i o n is o n l y c o n c e p t u a l l y d is t in c t f r o m e x t e n d e d s u b s t a n c e , s o ti m e o r
d u r a t i o n is o n l y c o n c e p t u a l ly d i s t in c t f r o m e n d u r i n g s u b s ta n c e
P r i n c i p l e s , I ,
w A T , 8 A : u 6 ) . C o n s e q u e n t l y , t h e r e is n o r e a l d i s ti n c t io n b e t w e e n t h e m o -
m e n t s t h a t b o u n d c o n s e c u t i v e d u r a t i o n s w h i c h a r e t o g e t h e r ( c on t ig u i t y ) a n d
t h e i r o c c u r e n c e a t t h e s am e m o m e n t ( c o n ti n u it y ). T h u s i t w o u l d a p p e a r m o s t
u n l i k e l y t h a t D e s c a r t e s w o u l d e q u a t e c o n t i g u i t y w i th a d i s c o n ti n u i ty , a s L e i b -
n i z d i d .
O f c o u r s e , t h e s e c o n s i d e r a t i o n s d o n o t m a k e i t a n y le ss u s e fu l t o h a v e a
c o n c e p t u a l d i s t i n c t io n o f c o n t i g u i t y , w h i c h is w h y D e s c a r t e s p r o v i d e s a c ri te -
r i o n f o r t h e c o n t ig u i t y o f b o d i es in r e s p o n s e t o B u r m a n ' s p r o m p t i n g . S o th e
q u e s t i o n a ri se s w h e t h e r a n y s u c h c r i te r i o n c a n b e f o u n d f o r c o n t ig u o u s d u r a -
t io n s , p e r h a p s o n e a n a l o g o u s t o D e s c a r te s ' o n e f o r b o d ie s .
A n a r g u m e n t a l o n g t h e s e l i n e s m i g h t g o a s f o l l o w s . A c c o r d i n g t o D e s -
c a r t es , tw o b o d i e s a r e c o n t i g u o u s i f t h e y c an m o v e w i th i n d e p e n d e n t m o t i o n s
w h i l e st il l t o u c h i n g , a s in t h e c a s e o f a b al l r o l l i n g in a b o w l . T h u s t h e c r i t e r i o n
ea dicuntur co ntigua, qu oru m extrem itates sunt simul. No te that Cottingham 's translation of the
second half of this sentence need s am ending, since it does not convey the fact that B urman is
criticizing Descartes for an inappropriate appeal to the com mo n, Aristotelian sense of contiguity.
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66 JOURNAL OF THE HISTORY OF PHILOSOPHY 26 :3 JULY 98 8
f o r sp a t ia l c o n t i g u i t y d e p e n d s o n i n d e p e n d e n t m o v a b i l it y , a f a c t w h i c h m a k e s
i t h a r d t o a p p l y t o t im e , s i n c e i t is n o t o b v i o u s h o w d u r a t i o n s c o u l d b e s a id t o
c h a n g e t h e i r r e l a t i v e l o c a t i o n i n t i m e . O n e s u g g e s t i o n , h o w e v e r , w o u l d b e t o
f o ll o w t h e i m p l ic i t lo g i c o f G u e r o u h ' s p o s i t io n , a n d e q u a t e m o v a b i l it y w i t h
s e p a r a b il it y . F o r i f a ll t h e m o m e n t s o f a g i v e n d u r a t i o n w e r e c o n t i n u o u s , t h e n
o n e m o m e n t c o u l d n o t b e m o v e d i n t h e s e n se o f s e p a r a t e d w i t h o u t its
n e i g h b o r s b e i n g m o v e d a ls o . B u t t h is D e s c a r t e s d e n i e s : a ll m o m e n t s a r e
i n d e p e n d e n t a n d s e p a r a b le . S o t h e y m u s t b e m e r e l y c o n ti g u o u s .
B u t t h is a n a l o g y i s f l aw e d . S e p a r a b i l i ty c a n n o t s t a n d i n f o r m o v a b i li ty . T h i s
c a n b e s e e n b y r e f e r e n c e t o t h e c a s e o f s p a c e . F o r t h e ( a r b i tr a r il y t a k e n ) p a r t s
o f e v e n a c o n t i n u o u s m a t e r ia l b o d y a r e s e p a r a b le , s in c e a n y e x t e n d e d b o d y is
d i vi si b le . T h e y a r e n o t f o r t h a t r e a s o n m e r e l y c o n t i g u o u s . S im i la r ly , th e s e p a r a -
b i li ty o f a ll th e p a r t s o f a d u r a t i o n c e r t a in l y m a k e s t h e i r c o n n e c t i o n c o n t i n -
g e n t , b u t it d o e s n o t n e c e s s a r il y m a k e t h e m d i s c o n t i n u o u s .
S o G u e r o u l t ' s e q u a t i o n o f d i s c o n t i n u i t y w i t h s e p a r a b i l i t y is i n c o r r e c t (a l-
t h o u g h t h is is o b s c u r e d b y h is a p p a r e n t f a i lu r e t o d i s t in g u i s h s e p a r a b i li ty f r o m
s e p a r a t io n ) . I f t w o C a r t e s i a n d u r a t i o n s a r e t o b e c o n t i g u o u s a n d n o t c o n t i n u -
o u s , t h e y m u s t b e a c t u a l l y s e p a r a t e d , n o t j u s t s e p a r a b l e . A n a c t u a l d iv i s io n
m u s t o c c u r b e t w e e n t h e m . N o w a c t u a l d iv i si o ns in s p a ce a r e e n g e n d e r e d b y
t h e d i f f e r i n g m o t i o n s o f t h e v a r i o u s p a r t s o f m a t t e r. B u t a s D e s c a r t e s m a k e s
c l e a r i n h i s r e p l y t o G a s s e n d i , a c t u a l d i v i s i o n s o r s e p a r a t i o n s i n t i m e a r e e f -
f e c t e d b y s u b s t a n c e s c e a s i n g t o ex i st : f o r a m o m e n t t o b e a c tu a l ly d i v i d e d f r o m
o r s e p a r a t e d f r o m s u c c e e d i n g o n e s i s f o r t h e e n d u r i n g t h i n g t o c e a s e t o e x i st a t
t h a t m o m e n t ( A T , 7 : 3 7 o) . T h u s g i v en t h e e q u iv a l e n c e o f d u r a t i o n w i th t h e
c o n t i n u e d e x i s te n c e o f a s u b st a n c e , t h e m o m e n t s o f c re a t io n a n d e x t in c t io n
s e e m t o b e t h e o n l y e x t re m i t ie s a d u r a t i o n c o u l d p o s s es s .
B u t j u s t a s t h e e x i s t e n c e o f c o n t i g u o u s w h o l e s is n o t e n o u g h t o m a k e t h e
e x t e n s i o n o f t h e u n i v e r s e d i s c o n t i n u o u s , s o t h e e x i s t e n c e o f is o l a te d c o n t i g u -
o u s d u r a t i o n s - - s a y t h e c o n t i g u o u s d u r a t i o n s o f m y l iv in g b o d y a n d m y
c o r p s e - - i s n o t s u f f i c i e n t fo r a d i s c o n t i n u i ty i n t h e d u r a t i o n o f all c r e a t e d
e x is te n c e . T h e o n l y w a y th a t t h is c o u l d h a p p e n w o u l d b e i f e v e r y t h i n g i n t h e
u n i v e r s e w e r e a n n i h i l a te d o r c r e a t e d t o g e t h e r. A n d t h e o n l y w a y t h a t s u c h
d i s c o n t in u i t ie s w o u l d c o m p r i s e a d i s c o n t i n u o u s o r d e r w o u l d b e i f a ll s u b -
s t a n c e s w e r e c r e a t e d f o r a c e r t a in d u r a t i o n , t h e n a n n i h i l a te d , a n d a d is t in c t se t
o f s u b s t a n c e s w e r e i m m e d i a t e l y c r e a t e d i n th e i r p l a c e . B u t th i s ta k e s u s b a c k t o
t h e t h e o r y o f r e p e a t e d a n n i h il a ti o n a n d c r e a ti o n w e a l re a d y r e j e c t e d a b o v e as
i n c o m p a t i b l e w i t h D e s c a r t e s' d o c t r i n e o f c o n t i n u o u s c r e a ti o n .
T h u s , i n c o n c lu s i o n , t h e r e s e e m s to b e n o b a si s i n D e s c a rt e s ' p h i l o s o p h y f o r
a r e a l d i s t i n c t i o n b e t w e e n c o n t i n u i t y a n d c o n t i g u i t y . A n d t h e o n l y b a s i s f o r
c o n c e p t u a l ly d i s ti n g u i sh i n g a m e r e l y c o n t i g u o u s t e m p o r a l o r d e r w o u l d b e i f
t h e e n d p o i n t s o f c o n s e c u t iv e d u r a t io n s w e r e t h e m o m e n t s o f t h e d e s tr u c t io n
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C O N T I N U O U S C R E A T I O N , C O N T I N U O U S T I M E 3 6 7
a n d c r e a t i o n o f s e p a r a t e u n i v e r s e s . T h e s e u n i v er s es , m o r e o v e r , w o u l d h a v e t o
e n d u r e l o n g e n o u g h t o h a v e di s ti n c t e n d p o i n t s . A s u c c es s i o n o f i n s ta n t a n e o u s
u n i v e r se s c o u l d n o t e v e n b e d i s t in g u i s h e d c o n c e p t u a l ly f r o m a c o n t in u o u s l y
e x i s ti n g u n i v e r s e .
T h u s i f t h e c l as si c t h e si s is c o r r e c t i n s u p p o s i n g C a r t e s i a n t i m e t o b e a
s e q u e n c e o f d i s c o n t i n u o u s i n d iv i s ib l e m o m e n t s , t h e s e i nd i vi si bl es m u s t b e e x -
t e n d e d t i m e a t o m s . S o le t u s n o w t u r n t o t h e q u e s t i o n o f w h a t f u r t h e r e v i d e n c e
t h e r e i s f o r t h e i d e a t h a t t i m e is c o m p o s e d o f e x t e n d e d e l e m e n ts .
6 . M O M E N T S A N D I N S T A N T A N E I T Y
I n h i s
Principles
D e s c a r t e s o n o n e o c c a s i o n r e f e r s t o t h e u n e x p e c t e d a p p e a r -
a n c e o f a s t a r o c c u r r i n g i n a n e x t r e m e l y s h o r t t im e , a s i f i n a m o m e n t 4 o ; a n d
i n h i s
Repl ies to the Firs t Object ions
h e s p ea k s o f th e r e b e i n g n o p o w e r w i t h in
a n y o n e o f u s w h i c h w o u l d s u ff ic e to c o n s e r v e h i m through e v e n a m o m e n t o f
t i m e . 4 , T h e s e l o c u t i o n s s e e m t o s u p p o r t t h e i d e a t h a t a m o m e n t o r i n s t a n t i s
n o t a f t e r a ll a m e r e p o i n t i n t im e , b u t a t r u e p a r t o f e x t r e m e l y s h o r t d u r a t i o n .
S o c o u l d D e s c a r t e s h a v e c o u n t e n a n c e d t e m p o r a l i n d iv i si b le s , e i t h e r f i n it e o n e s
o r o n e s w h o s e q u a n t i t y i s n o n - z e r o b u t v a n i s h i n g l y s m a ll ?
T h e a n s w e r t o t h i s q u e s t io n , I c o n t e n d , is a f i rm n o . F o r e v e n t h o u g h
D e s c a r t e s n e v e r e x p l i c i t ly d i s c u s se s t i m e a t o m s , h e e x p l i c i tl y r e j e c t s s p a t i al
i n di v is ib le s , a n d , I m a i n t a i n , h i s a r g u m e n t s a g a i n s t t h e m s h o u l d a p p l y e q u a l l y
w e l l t o ti m e . O f s p a t i a l a t o m s h e s a ys : I sa y t h a t it w o u l d i m p l y a c o n t r a d i c t i o n
f o r t h e r e t o b e a t o m s w h i c h a r e c o n c e i v e d o f as e x t e n d e d a n d a t t h e s a m e t i m e
i n d i v i s i b l e , s i n c e a l t h o u g h G o d c o u l d h a v e m a d e t h i n g s w h i c h a r e s u c h t h a t
t h e y a r e n o t d i v i d e d b y a n y c r e a t e d b e in g , w e c e rt a i n ly c a n n o t u n d e r s t a n d h i m
a s h a v i n g b e e n a b l e t o d e p r i v e h i m s e l f o f h is o w n f a c u l ty o f d i v i d i n g t h em . 4 *
T h u s i t is n o t t h e i n d e f i n i t e d i v is ib i li ty o f m a t t e r t h a t r u l e s o u t t h e e x i s t e n c e o f
a t o m s , s in c e t h e r e w o u l d b e n o t h i n g c o n t r a d i c t o r y a b o u t t h e e x is t e n ce o f
p a r t ic l e s o f m a t t e r t h a t h a d n o t i n f a c t b e e n d i v i d e d . B u t i t is c o n t r a d i c t o r y t o
s u p p o s e t h a t s u c h p a r t i c l e s a r e i n d i v i s i b l e i n p r i n c i p l e , f o r t h i s w o u l d b e t o s e t
l im i ts o n G o d ' s c r e a t i v e o m n i p o t e n c e , a n d t h u s t o li m i t t h e u n l i m i t a b l e .
4 0 P r in c ip l e s
I I I , wa I 1 A T , 8 : 1 5 9 , l 1 . 1 4 - 1 5 : i d e o q u e b r e v i s s i m o t e m p o r e , a c t a n q u a m i n
m o m e n t o .
4~ Firs t Rep l ies:
A T , 7 : x 1 1 ; C S M , ~ : 8 0: c / l m q u e n u l l a m i n s e i n v e n i t p o t e n t i a m , q u a e s u f fi c ia t
a d i p s u m v e l p e r m o m e n t u m t e m p o r i s c o n s e r v a n d u m , m e r i t o c o n cl u d it s e e ss e a b al io ( m y
e m p h a s i s ) .
4 , L e t t e r t o M o r e , 5 t h F e b r u a r y 1 6 4 9 ; A T , 5 : u 7 3 : D i c o i m p l i c a t e c o n t r a d i c t i o n e m , u t
a l i q u a e d e n t u r a t o m i , q u a e c o n c i p i a n t u r e x t e n s a e a c s i m u l i n di v is i b il e s; q u i a , q u a m v i s D e u s e a s
t a l e s e f f i c e r e p o t u e r i t , u t ~ n u l l a c r e a t u r ~ d i v i d a n t u r , c e r t ~ n o n p o s s u m u s i n t e l l e g e r e i p s u m s e
f a c u l t a te e a s d i v i d e n d i p r i v a r e p o t u i s s e . C f . t h e a l m o s t i d e n ti c a l w o r d i n g i n h i s l e t t e r t o G i b i e u f ,
1 9 t h J a n u a r y 1 6 4 ~ , A T , 3 : 4 7 7 , q u o t e d b y L a p o r t e , u 5 9 , a s w e ll a s t h e m o r e p o n d e r o u s p a s s a g e i n
t h e P r i n c i p le s
I I , w A T , 8 : 5 1 - 5 ~ ; C S M , 1 : u 3 1 - 3 2 .
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368 JOURN L OF THE HISTORY OF PHILOSOPHY 26:3 JULY 1988
Here Gueroult thinks he sees a loophole. For, he argues, if it is not indefi-
nite indivisibility tha t forms the basis of Descartes' rejection o f spatial indivisi-
bles, but the unlimitability of divine creative omnipotence, then this arg ume nt
against indivisibles is evidently not valid for durat ion , since dur ati on is not a
reality, a substance distinct from creative omnipotence, but is this omnipo-
tence itself insofar as it creates existence (Guer., ~76/195 ). Consequently,
according to Gueroult, the creative instant can be, and in fact is, indivisible.
Its indivisibility derives from tha t of the creative act itself, and the refore has
noth ing in common with the indivisibility of the atom of extension rejected
by Descartes (ibid.).
But this line of argumen t has already been un de rmi ned by our conclusions
in section 4 above where we saw that Gueroult's reading of the abstract/
concrete distinction as one between created and creative is untenable. Con-
crete dura tion is the du rati on o f the created thing, just as concrete extension is
the extension of the created thing. Thus Gueroult's attempt to exempt in-
stants f rom Cartesian anti-atomism is unsuccessful. Although God could have
created things which, as a matte r o f contingent fact, always exist for some very
short duration ('moment'), we cannot understand him as having been able to
deprive himself of his own faculty of creating them for some lesser time, i.e.,
of being able to divide such moment s into smaller parts. Th ere for e moments
cannot be ext ended indivisibles, no matter how small their extension.
But this still leaves us with the problem of how to account for the passages
quoted above, where Descartes writes of moments as if they were ext ended , as
in his talk of conservation throu gh a momen t of time, and so forth. Given the
untenability of time atoms, perhaps Laport e is right after all in his claim that
moments are true parts of time, extremely small but nonetheless divisible
durations? It would appear not. Such a reading is flatly contradicted by other
passages in the same works where Descartes speaks of the instant as a mere
point of time, totally devoid of dura tion. Thu s a few pages before the above
quoted reference to a momen t as
brevissimum tempus
in the
Principia,
Descartes
alludes to a min imu m point of time, which they call an instant minimum
temporispunctum, quo d instans vocant; III, art. 63; AT, 8:115, 1.8-9). And in the
Regulae, discussing privations of positive qualities, Descartes says: The cogni-
tion through which I intuit what nothing is, or an instant, or rest, is no less
true than that through which I understand what existence is, or duration, or
motion Rules fo r the Direction o f the Mind, Rule 12, AT, lo:42o, U. ~-8; CSM,
45). Here again Descartes seems to regard an instant as a mere limit, a priva-
tion o f duration.
How should we deal with these inconsistencies? An ingenious solution is
that offered by Beyssade. He proposes that there are two distinct technical
terms here: There is the moment, defined as brevissimum tempus, which is a
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C O N T I N U O U S C R E A T I O N , C O N T I N U O U S T I M E 3 6 9
t r u e d i v i si b le p a r t o f d u r a t i o n , a s L a p o r t e s u g g e s t e d . B u t w e m u s t c l e a rl y
d i s t i n g u i s h t h i s f r o m t h e t e r m i n s t a n t
( i n s t a n s
i n t h e L a t i n ) , w h i c h , B e y s s a d e
c la im s , D e s c a r t e s a l w a y s u s e s . . , i n t h e s tr ic t s e n s e o f li m i t, f o r a p r i v a t i o n o r
n e g a t i o n o f d u r a t i o n , w h i c h e x c l u d e s p r i o r i t y in t im e , w h i c h c a n n o t b e d i m i n -
i sh e d . 4 a T h i s d i s t i n c t i o n , a c c o r d i n g t o B e y s s a d e , i s i m p l i c i t i n D e s c a r t e s ' u s a g e
o f th e L a t in w o r d s m o m e n t u m a n d i n s t a n s , a l t h o u g h i t is n o t a l w a y s f o l l o w e d i n
t h e F r e n c h t r a n s l a t i o n s :
I f
a p a r t c o n t a i n s n o t h i n g o t h e r t h a n p o i n t s, a p o i n t
is i n al l r i g o r n e v e r a p a r t . S i m i l a r ly f o r d u r a t i o n : t h e i n s t a n t is i ts e x t r e m i t y ,
t h e m o m e n t i s a p a r t . . . . O n e c a n t h u s s p ea k o f c o n s e r v a t i o n t h r o u g h a
m o m e n t o f t i m e
( D i s c o u r s e
4 : A T , 6 : 3 6 , 11. 2 - 3 , a n d
R e p l i e s t o F i r s t O b j e c t i o n s ,
AT, 7 :111 , 11 . 1o - 1 1 , 9 .8 8) , o f n e i g h b o r i n g m o m e n t s
( R e p l i e s t o F i f t h O b j e c t i o n s ,
A T , 7 : 3 7 o , 1 .4 ), o r o f s u m m i n g m o m e n t s t o c o m p o s e t h e d u r a t i o n o f a m o t i o n
( P r i n c i p l e s , I I I , 5 9 : t h e t r a n s l a t o r h a s m i x e d t h e w o r d s i n s t a n t a n d m o m e n t ,
t h e L a t in o n l y u s e s m o m e n t u m ; B e y s s a d e, 3 4 9 - 5 o ) .
T h i s i n t e r p r e t a t i o n h a s t h e v i r t u e o f n e a t n e s s . I t a p p e a r s t o r e s o l v e t h e
i n c o n s is t e n c ie s i n D e s c a r t e s ' u s a g e w i t h o u t c o n f l i c t in g w i th h i s o p p o s i t i o n t o
e x t e n d e d i n di v is ib l es , s in c e i t m a k e s m o m e n t s e x t e n d e d b u t d iv is ib le , a n d
i n s ta n t s in d i v is i b le b u t u n e x t e n d e d .
N e v e r t h e l e s s , d e s p i t e i ts in g e n u i t y , B e y s s a d e 's i n t e r p r e t a t i o n is f a c e d w i t h
t w o m a j o r s e t s o f d i f f i c u lt i e s . T h e f i rs t is t h a t i t s i m p l y d o e s n ' t r e s o l v e t h e
t e x t u a l i n c o n s i s t e n c i e s . I f it d i d , D e s c a r t e s w o u l d a l w a y s w r i t e ( in t h e L a t i n ) o f
t h in g s b e i n g a t i n st a nt s , a n d e n d u r i n g t h r o u g h m o m e n t s . Y e t i n t h e p a s sa g e
i n v o lv i n g t h e l o c u t io n m i n i m u m t e m p o r i s p u n c t u m , q u o d i n s t an s v o c a n t ,
D e s c a r t e s w r i te s o f e n d u r i n g t h r o u g h t h is in sta nt; ~4 a n d w h e n h e r e f e r s t o
m o m e n t s i n t h e
M e d i t a t i o n s ,
h e s p e a k s o f a su b s t a n c e' s b e i n g c o n s e r v e d a t ( n o t
t h r o u g h ) e v e r y m o m e n t o f its d u r a t i o n . W o r s e , i n th e p a s sa g e w h e r e h e
a l le g e d ly d e f i n e s a m o m e n t a s b r e v is s im u m t e m p o r u m , w h a t h e a c t u a l l y w r i t e s
is a n d t h e r e f o r e i t is d i f f u s e d o v e r t h e w h o l e o f th is s u r fa c e i n a n e x t r e m e l y
s h o r t t i m e , a s i f i n a m o m e n t . 4 5 T h i s is h a r d l y t o d e f i n e a m o m e n t a s a n
e x t r e m e l y s h o r t t im e . I t w o u l d b e m o r e p l au s ib l e to i n t e r p r e t t h e
a s
i f i n a
m o m e n t a s m e a n i n g
a s
i f i n n o t i m e a t a ll . T h u s i t a p p e a r s t h a t D e s c a r t e s '
u s a g e is t o o i n c o n s t a n t t o s u p p o r t B e y s s a d e ' s i n t e r p r e t a t i o n .
S e c o n d l y , a n d m o r e d a m n i n g l y , t h is v ie w is o p e n t o t h e s a m e o b j e c t i o n s
4s Beyssade, 348: Sau f err eu r de n otre part , D escartes pren d toujours le mot, et son original
Latin
instans,
au s ens stricte de iim ite, po ur u ne privation ou n~gation de dur~e, qui exclut toute
priorit~ de temps, qui n e saurait diminuer.
Principles,
III , w AT, 8:115, i i . 5-9 :
h o c
non nisi per m inimum temporis puoctum,
quod instans vocant, du rar e potest, & ide6 continuitatem e arum mo rris non interrum pit.
4s Principles,
I I I, w 11: AT, 8:159 , i I. 14-15: idebque brevissimo tempore, ac tanquam in
mo me nto, supra totam istam superficiem se diffundet.
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3 7 ~ J O U R N L O F T H E H I S T O R Y O F P H I L O S O P H Y 2 6 : 3 J UL Y 1 9 8 8
t h a t G u e r o u l t a l r e a d y r a i se d a g a i n st L a p o r t e ' s p r o p o s a l t h a t m o m e n t s a r e
e x t e n d e d . A r g u i n g t h a t t h e q u e s t i o n o f t i m e ' s d i s c o n t in u i t y c a n n o t i n a n y c as e
b e re s o l v e d m e r e l y b y a p p e a l t o s c a t t e r e d q u o ta t i o n s , b u t o n ly b y r e f e r e n c e t o
t h e w h o l e C a r t e s i a n c o n c e p t i o n o f m o t i o n (2 7 4 / 1 94 ), G u e r o u l t p o i n t s o u t t h a t
t h e p r o p o s e d e x t e n d e d n e s s o f th e C a r t e s i a n m o m e n t is i n f la t c o n t r a d i c t io n t o
D e s c a r t e s ' a n a l y s is o f m o t i o n a s a s u c c e ss i o n o f i n s t a n t a n e o u s s t at e s, a s w e l l a s
t o t h e i n s t a n t a n e i t y o f l ig h t . F o r D e s c a r t e s a l w a y s t r e a t s m o t i o n s t a ti c al ly : h e
a n a l y z e s i t a s c o n s i s t i n g i n a c e r t a i n c o n a t u s - - a n e n d e a v o r , o r t e n d e n c y t o
m o v e - - a t a n y i n s t a n t o f th e m o t i o n . A n d h e r e D e s c a r t e s is e x p li c it t h a t t h e
i n s ta n t s a r e u n e x t e n d e d , t h e y a r e m e r e p o i n t s o f t i m e i n w h i c h n o r e a l m o t i o n
c a n o c c u r , b u t o n l y a t a n g e n t i a l t e n d e n c y . T h i s i s t h e b a s is o f hi s f a r - r e a c h i n g
c o n c l u s i o n t h a t i n e r t i a l m o t i o n m u s t b e r e c t il i n e a r , m o t i o n i n a s t r a i g h t l in e :
A n d a l t h o u g h i t is t r u e t h a t n o m o t i o n o c c u r s in a n i n s t an t , i t is h o w e v e r
o b v i o u s t h a t e v e r y t h i n g t h a t m o v e s , i n e v e r y s i n gl e i n s ta n t t h a t c a n b e s p e c i -
f i ed w h i l e it is i n m o t i o n , h a s a d e t e r m i n a t i o n t o c o n t i n u e i ts m o t i o n i n a g i v e n
d i r e c t i o n i n a s t r a i g h t l i n e , b u t n e v e r i n a c u r v e d l in e. 4 6
B e y s s a d e , o f c o u r s e , a c k n o w l e d g e s t h a t t h e r e i s n o m o t i o n i n a n i n s ta n t .
Y e t h e s t il l a r g u e s t h a t t h e
c o n a t u s
a c c r u e d . . . in t h e m i n i m a l d u r a t i o n o f a
m o m e n t c a n b e a t t r i b u t e d t o t h e m o v i n g th i n g t a k e n a t a n in s t an t , w h e n i t
b e c o m e s , a c c o r d i n g t o h i m , t h e t h i n g ' s d e t e r m i n a t i o n t o m ov e.4 7 B u t f r o m t h i s
i t f o l l o w s t h a t t h e c o n a t u s (a s o p p o s e d t o t h e m e r e d e t e r m i n a t i o n t o m o v e )
e n d u r e s f o r a m o m e n t , w h e r e a m o m e n t i s a t r u e p a r t o f d u r a t io n . A n d s in ce
l i g h t i s i d e n t i f i e d b y D e s c a r t e s a s a
c o n a t u s
i t i s t h e r e f o r e s ti ll t h e c a s e t h a t , a s
o n L a p o r t e ' s v ie w , t h e p a s s a g e o f l i g ht w o u l d t a k e a f in i te a m o u n t o f t i m e : i t
w o u l d h a v e a t e m p o r a l m o t i o n a n d a r e a l s p e e d ( G u e r . 2 7 3 ). B u t a s G u e r o u l t
o b s e r v e s , D e s c a r t e s e x p l i c i t ly d e n i e s t h a t t h e p a s s a g e o f l i g h t is a n a c t u a l
m o t i o n , t h a t i t t a k e s t i m e ; i t i s, l i k e a l l c o n a t u s s t ri c tl y i n s t a n t a n e o u s . T h u s t h e
a l l eg e d e x t e n d e d n e s s o f th e m o m e n t c o n t r a d i c t s C a r t e s i a n p h y s i cs a t i ts v e r y
c o r e .
M u s t w e t h e n j u s t a c c e p t t h a t D e s c a r te s w a s r a t h e r c a r e l e ss in h i s r e f e r -
e n c e s to m o m e n t s o r i n s t a n ts a s i f t h e y w e r e e x t e n d e d ? I n t r y i n g t o a v o i d t hi s
c o n c l us i o n , o n e t e m p t a t i o n i s t o r e a d h is m o m e n t s a n d c o n a t u s e s a s e l e m e n t s
o f d u r a t i o n o r m o t i o n o f v a n i s h i n g q u a n t i t y , a s i n fi n it e si m a ls . T h i s i n t e r p r e t a -
46
Principles
II, w AT , 8:64/CSM, 1:242: Ac quamvis nullus motus fiat in instanti, mani-
festum tam en est om ne id quod movetur, in singulis instantibus quae po ssum designari dum
movetur , determ inatum esse ad m otum suum continuandum versus a l iquam partem, secund~m
lineam rectam, no n autem u nqu am secundhm ullam lineam curvam.
47 Be yssad e, 141 n. 5: M ais le conatus ains i acquis et accru dans la dur6e, au m oins dans la
dur~e m inimale d 'un mo m ent, peu t ~tre attribu6 au m obile pris ~ un instant de son mo uvem ent et
en u n point de sa trajectoire; il est alors sa
d~termination ~
tel mouvem ent (Principles, II, w AT ,
8:64 11 .4- 5 & l~--13)-
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C O N T I N U O U S C R E A T I O N C O N T I N U O U S T I M E
37
t io n h a s b e e n e x a m i n e d a t l e n g t h b y G u e r o u l t , w h o I t h i n k r i g h t ly r e j e c ts it,
b u t hi s e x a m i n a t i o n is w o r t h a b r i e f c o n s i d e r a t i o n .
G u e r o u l t h i m s e l f c an a c c o u n t f o r t h e a m b i g u it y o f D e s ca r te s ' p h r a s in g i n
t e r m s o f h is a b s t r a c t / c o n c r e t e d i s ti n c ti o n . F r o m t h e ab s t ra c t , c r e a t e d p o i n t o f
v i e w , h e s a ys , i n s ta n t s n o l o n g e r a p p e a r a s r i g o r o u s l y i n d iv i si b le , n o t h i n g -
n e s se s o f d u r a t i o n , b u t a s f r a g m e n t s o f d u r a t i o n s . . , t h a t a r e a s s m a ll a s
poss ib l e , b r e v i s s i m a t e m p o r a . . . i n f in i t e ly s m a l l a c t u a l s ( G u e r . , 2 7 5 / 1 9 5 ) . B u t
s in c e D e s c a r t e s ' p h y s i c s c o u l d n o t b e c o n s t i tu t e d w i t h o u t b e i n g r e f e r r e d t o a
c o n c r e t e p o i n t o f v ie w , m e a n i n g t o t h e a b s o l u t e i n d iv is ib i li ty o f t h e i n s t a n t
( G u e r . , ~ 7 9 / 1 9 8 ), s o m e u n i o n o f t h e t w o p o i n t s o f v ie w is n e c e s sa r y f o r t h e
p h y s ic a l e x p l a n a t i o n o f c h a n g e . N o w t h e s e t w o p o i n ts o f v ie w c o u l d b e u n i -
f ie d , a n d t h e c o n c o m i t a n t i n c o n s i s t en c i e s r e s o l v e d , if w e w e r e t o r e g a r d D e s -
c a r t e s ' i n s t a n t s a s a n t i c i p a t i o n s o f L e i b n i z ' s d i f f e r e n t i a l s , a s i n fi n i te l y s m a l l y e t
d i v is ib l e a c tu a l s. B u t a s G u e r o u l t h a s s t r e ss e d , h o w e v e r e n t i c in g a n i n t e r p r e t a -
t io n t h is m a y b e , t h e f a c t r e m a i n s t h a t D e s c a r t e s h i m s e l f n e v e r d o e s a c h i e v e
s u c h a re s o l u t i o n . I n f a c t i t i s f l at ly c o n t r a d i c t e d b y hi s t h e o r y o f t h e i n s t a n t o f
l ig h t a s a b s o l u t e i n t e m p o r a l i t y , a n d b y h is r e d u c t i o n o f m o t i o n t o a s u c c es -
s io n o f d i f f e r e n t s t a te s ( G u e r . , ~ 7 4 / a9 4 ) . T h u s t h e L a p o r t e a n d e f i n it i o n o f
a n i n s t a n t a s a n e x t r e m e l y s h o r t t im e t h a t c o u l d l e a d to t h e i n fi n it e si m a l a s a
v a n i s h i n g m i n i m u m , d o e s n o t a c t u a ll y l e a d t o i t a n d is o n l y a n i m p e r f e c t
m a n n e r o f s p e a k i n g - - t h e i n s t a n t is e s s e n ti a ll y a ra d i c al n e g a t i o n o f all d u r a -
t i o n ( G u e r . , ~ 7 4 / 1 9 4 ) .
Q u i t e s o . B u t t h is c o n c l u s i o n m i l it a te s e q u a l l y a g a in s t G u e r o u l t ' s o w n i d e a
t h a t t h e r e c o u l d b e s u c h L a p o r t e a n m o m e n t s e v e n f r o m t h e ab s tr a ct , c r e a t e d
p o i n t o f v i ew . I n f i n it e l y sm a l l, d iv i si b le m o m e n t s a r e s i m p l y in c o m p a t i b l e w i t h
C a r t e s i a n p h y s i c s, e v e n a t i ts m o s t a b s t ra c t . F o r c o n f i r m a t i o n o f t hi s o n e n e e d
o n l y r e f e r t o D e s c a r t e s ' r e l e n t le s s h o s t i l i ty to t h e i n f in i t e s im a l t e c h n i q u e s i n b u r -
g e o n i n g u s e a m o n g h is p e e r s , e sp e c ia ll y F e r m a t a n d R o b e r v a l. W e m u s t t h e r e -
f o r e c o n c l u d e w i th G u e r o u l t t h a t D e s c a r te s ' r e fe r e n c e s t o m o m e n t s a s i f t h e y
a r e e x t r e m e l y s h o r t ti m e s is i n d e e d o n l y a n i m p e r f e c t m a n n e r o f s p e a k in g .
7 . D I S C O N T I N U I T Y A N D M O T I O N
B u t b e f o r e c o n c l u d i n g , t h e r e is o n e f u r t h e r a r g u m e n t f o r t h e cl as si c t h es is I
f e e l o b l i g e d t o c o n s i d e r , i f o n l y o n a c c o u n t o f its w i d e s p r e a d i n f lu e n c e . T h i s i s
t h e a r g u m e n t f r o m d i s c o n t i n u o u s m o t i o n .
S i m p l y s t a t e d , i t r u n s a s f o l l o w s . A s i s w e l l k n o w n , D e s c a r t e s d e n i e d t h a t a
d e c e l e r a t in g b o d y h a d t o g o t h r o u g h a ll t h e i n te r m e d i a t e d e g r e e s o f s p e e d .
T h a t is , h e d e n i e d ( in t h is s e n s e , a t l e as t ) t h e c o n t i n u i t y o f m o t i o n . Y e t h e
u p h e l d t h e c o n t i n u i t y o f m a t t e r o r e x t e n s io n . B u t , so t h e a r g u m e n t g o e s, if
m o t i o n is d i s c o n t i n u o u s a n d s p a c e is c o n t i n u o u s , it f o ll o w s t h a t t i m e m u s t b e
d i s c o n t i n u o u s .
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372
J O U R N A L O F T H E H I S T O R Y O F P H I L O S O P H Y
26:3
J U L Y
~988
Gueroult gives what appears to be an inverted form of this argument:
Whereas Galileo justifies the infinite dimin ishmen t of speed by the infinite
divisibility of time, which implies that of the instant itself, Descartes, consider-
ing that the instant cannot be diminished and is an indivisible in all rigor,
concludes from this that the elementary speed is also an absolute indivisible
and that real (temporal) motion is made up of the repetition o f these indivisi-
bles (Guer. 282/199 ).
Thu s, fo r Gueroul t, Descartes' static analysis of motion is evidence for a
radical temporal atomism. Motion is analyzed in terms of a succession of
discrete states because time is discontinuous. The ref ore motion, like duration,
is composed of a discontinuous succession of actual indivisibles.
But despite appearances, and whichever way round it is proposed, this
argument is invalid. For it is perfectly possible for motion to be discontinuous
while space and time are both continuous. Such motion would be represent ed
on a gra ph of (continuous) space against (continuous) time by a discontinuous
line. But this kind of discontinuity has n othing to do with any composition out
of indivisibles. And far from deriving the discontinuity of motion f rom that of
time, as Gueroult suggests, Descartes was rather bound to assert it as a conse-
quence of his laws of collision. For his natural philosophy, unlike that of
Leibniz, could make no sense of the elasticity of matter; so colliding bodies
had to change their speed instantaneously, and thus discontinuously. It was of
course for the disharmonies attendant on these discontinuous changes of
motion that Leibniz took him to task,48 but not fo r any supposed d iscontinuity
in time. Indeed, nowhere in his writings does Leibniz attribute such a
discontinuous time to Descartes.49 The bottom line here is that a body unde r-
going a discontinuous change in its motion in a collision does not thereby
cease to exist at that time, but rather remains in existence continuously
throughout the process. It therefore has a continuous duration despite the
discontinuity of its motion.
To conclude, there is no doubt that Gueroult is right to draw attention to
the static charac ter o f motion in Cartesian physics, and with it the difficulty of
deriving duration from an instant that denies it, motion from a state (274/
193 ) . Descartes never comes to terms with time as an independen t variable or
geometric quantity. And Gueroult and Koyr6 are certainly correct to see this
48 H i s c r i t i q u e i s c o n t a i n e d i n h i s Crit ica l Thoughts on the General P art o f the Princip les o f Descartes
o f 1 6 9 2 , G . 4 : 3 5 4 - 9 2 , t r a n s l a te d b y L o e m k e r i n Leibniz Philosophical Papers and Letters 3 8 3 - 4 1 z .
49 I n f a c t, L e i b n i z s o b j e c t i o n t o D e s c a r t e s m e a s u r e o f c o n s e r v e d f o r c e p r e s u p p o s e s t h a t
C a r t e s i a n t i m e i s c o n t i n u o u s . A c c o r d i n g t o L e i b n iz , i f G o d e x e r t s a f o r c e o f m v a t e v e r y s in g l e
i n s t a n t a s D e s c a r t e s p r o p o s e s , t h e n , a s s u m i n g t i m e i s c o n t i n u o u s , t h e t o t a l f o r c e a c c r u i n g w o u l d
b e g i v e n b y t h e t i m e i n t e g r a l o f m v , w h i c h i s p r o p o r t i o n a l t o m y . S e e L e i b n iz s Specimen Dy-
namicum
i n L o e m k e r , e s p e c ia l ly 4 51 n . 7 , a n d r e f e r e n c e s g i v e n th e r e .
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C O N T I N U O U S C R E A T I O N , C O N T I N U O U S T I M E 3 7 3
q u a s i - e li m i n a t io n o f t i m e a s o n e o f th e c h i e f d e f e c t s o f C a r t e s i a n p h y s ic s , a
s h o r t c o m i n g t h a t b o t h N e w t o n a n d L e i b n i z w e r e s o o n t o r e d r e s s . B u t t h i s i s
n o t a t a ll t h e s a m e a s h is h a v i n g a d v o c a t e d a c o n c e p t i o n o f t im e a s d is c o n t i n u -
o u s , a s c o m p o s e d o f i n d iv i si b le s , a s I h o p e m y a r g u m e n t h a s s h o w n . R a t h e r , I
c o n t e n d , t h is w a s s i m p l y t h e o n l y w a y D e s c a r t e s c o u l d f i n d t o g iv e a c o n s i s t e n t
a n al ys is o f c o n t i n u o u s m o t i o n a n d d u r a t i o n w i t h o u t t h e c o n c e p t s o f th e c a l cu -
l us : t h e r e m u s t b e a t e n d e n c y t o m o v e a t a n y p o i n t in t im e i n o r d e r f o r t h e
m o t i o n t o b e tr u l y c o n t i n u o u s ; c o r r e s p o n d i n g l y , t h e r e m u s t b e c r ea t io n a t a n y
i n st a n t in o r d e r f o r t h e r e t o b e c o n t i n u o u s e x i s te n c e a n d d u r a t i o n .
T h i s is i n fa c t t h e s e n s e o f th e p a s s a g e c o n c e r n i n g t h e m i n i m u m p o i n t o f
t i m e
minimum temporis puncture)
a l l u d e d t o a b o v e : f o r s i n ce t h e y a r e in p e r -
p e t u a l m o t i o n , a l t h o u g h it c a n s o m e t i m e s h a p p e n t h a t t h e y ar e a r r a n g e d i n
p r e c i se l y t h e s a m e w a y a s t h e l e a d e n b a ll s d e p i c t e d i n t h e f i g u r e , th i s c a n o n l y
l as t f o r t h e m i n i m u m p o i n t o f ti m e w h i c h t h e y c all a n i n s ta n t , a n d f o r t hi s
r e a s o n d o e s n o t i n t e r r u p t t h e c o n t i n u i t y o f t h e i r m o ti on . 5 o
C O N C L U S I O N
I h a v e a r g u e d t h a t t h e c la s si c t h e s i s is a m i s t a k e , t h a t a n a n a ly s i s o f t h e
p a s sa g e s w h e r e D e s c a r te s p u r p o r t e d l y a r g u e s f o r t h e d i s cr e te n e s s o f t im e r e -
v e al s o n l y a r g u m e n t s f o r t h e c o n t i n g e n c y o f all th e i n n u m e r a b l e p a r ts i n to
w h i c h ti m e c a n b e d i v id e d , t h e d e p e n d e n c y o f th e i r c o n n e c t io n o n G o d ' s c o n -
t i n u o u s a c t i o n . I h a v e a r g u e d t h a t G o d ' s a c t o f c r e a t io n , a l t h o u g h i n i ts e l f
i n d i v is i b le , is c o n t i n u o u s a n d i n d e f i n i t e l y d i v is i b le i n r e s p e c t o f i ts d u r a t i o n , a n d
t h a t o n l y s u c h a t r u l y c o n t i n u o u s c r e a t i o n w o u l d b e e q u i v a l e n t t o c o n s e r v a t i o n .
A n d I h a v e a r g u e d t h a t D e s c a r t e s ' c h a r a c te r i st i c w a y o f a n a l y z in g t e m p o r a l
a c t iv i ty i n ' t e r m s o f i n s t a n t a n e o u s t e n d e n c i e s t o a c t a t e a c h i n s t a n t is p e r f e c t l y
c o m p a t i b le w i th h i s h o l d i n g t h a t t h o u g h t s a n d m o t i o n s a r e c o n t i n u o u s in t im e ,
d e s p i t e h is a v o w a l o f t h e e x i s te n c e o f d i s c o n t in u o u s c h a n g e s o f m o t io n .
B u t I h a v e n o t a r g u e d t h a t D e s c a r t e s p r e s e n t s u s w it h a c o h e r e n t o r s a ti sf a c-
t o r y a c c o u n t o f t h e c o n t i n u it y o f t im e , o f h o w a c o n t i n u o u s d u r a t i o n c o u l d b e
c o m p o s e d o f a n i n fi n it e o r i n d e f in i te n u m b e r o f d u r a t io n l e s s i n st an ts . N o r
s h o u l d I h a v e , a s I s h a l l n o w a r g u e , s i n c e D e s c a r t e s d o e s n o t r e g a r d t h e
p r o v i s i o n o f a t h e o r y o f c o n t i n u i t y a s a l e g it i m a t e e n d e a v o r .
T o s e e th i s, o n e n e e d o n l y s u r v e y D e s c a r t e s ' r e a c t io n s t o G a l il e o' s a t t e m p t
t o p r o v i d e s u c h a t h e o r y i n h i s Two N ew Sciences . G a li le o h a d p r o p o s e d t h a t t h e
c o n t i n u u m , t h o u g h i n f in i te l y d i v is i b le i n t o q u a n t i f i e d p a r t s ( th e i n n u m e r a -
5 0 P r i n c i p l e s
I I I , w A T , 8 A : 1 1 5 , a l . 5 - 1 o : c / ir a e n i m i n p e r p e t u o si n t m o t u , q u a m v i s
a l i q u an d o p o s s i t co n t i n g e re , u t eo d em p l an ~ : m o d o t i n t d i s p o s i t i a c g i o b i p l u m b e i i n h ac f i g u rh
d e p i c ti , h o c n o n n i si p e r m i n i m u m t e m p o r i s p u n c t u m , q u o d i n st a n s v o ca n t , d u r a r e p o te s t, & i d e 6
c o n t i n u i t a t e m e a r u m m o t O s n o n i n t e r r u m p i t .
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3 7 4 J O U R N L O F T H E H I ST O R Y O F PH I L O SO P H Y 6:3 JULY 1 9 8 8
b l e f in i t e p a r t s i n t o w h i c h D e s c a r t e s ' l i fe c o u l d b e d i v i d e d ) , w a s a l s o d i v is i b le
i n t o a n in f i n it y o f u n q u a n t i f i a b l e p a r t s o r in d iv is ib l es , t h e m s e l v e s s e p a r a t e d
b y i n di vi s i bl e vo i ds , w h i c h h e s u p p o s e d h e l d m a t t e r t o g e t h e r b y s u c t io n . T h e s e
i n di v is ib l es t h e n b e c a m e t h e b a s is f o r t h e p i o n e e r i n g w o r k o f hi s p u p il s C a v a -
l ie r i a n d T o r r i c e l l i in t h e I n t e g r a l C a l c u l u s ( m o r e a c c u r a t e ly , t h e G e o m e t r y o f
I n d iv i si b le s ), w h e r e a li n e w as u n d e r s t o o d a s c o m p o s e d o u t o f a n i n f in i t y o f
i n d i v is i b le p o i n t s , a s u r f a c e o u t o f a n i n f i n i t y o f i n d iv i s ib l e li n e s, a n d s o f o r t h .
D e s c a r t e s ' r e a c t i o n t o a ll th i s is s c a t h i n g , t o s a y t h e l e as t. T h e b a s is f o r t h i s
h o s ti li ty , a s w e s h o u l d h a v e e x p e c t e d f r o m h is d i sc u s s io n s i n t h e
P r i n c i p i a
a n d
e l s e w h e r e , is t h a t t o g i v e a n a c c o u n t o f c o n t i n u i t y i n v o lv e s r e a s o n i n g a b o u t
i n fi n it y , a n d t h is i s n e c e s s a r il y b e y o n d o u r r e s o u r c e s a s f in i te c r e a t u r e s . T h e f a c t
t h a t G a l i l e o a c k n o w l e d g e s t h is a n d s ti l l g o es a h e a d w i t h h is a c c o u n t o f c o n t i n u -
it y, a p p e a r s t o D e s c a r t e s a s o v e r w h e l m i n g h u b r i s . I n r e p l y t o M e r s e n n e , w h o
s e n t h i m a c o p y o f G a l il e o 's b o o k f o r h i s c o m m e n t s , h e w r i te s : H e is l a c k i n g i n
e v e r y t h i n g h e s a y s a b o u t i n f i n it y , i n th a t , n o t w i t h s t a n d i n g h is a d m i s s i o n t h a t
t h e h u m a n s p ir it , b e i n g f in i te , is n o t c a p a b l e o f u n d e r s t a n d i n g i n fi n it y , h e d o e s
n o t s t o p d i s c u s s in g e v e r y t h i n g a s i f h e u n d e r s t o o d it j u s t t h e s am e . s x
A s f o r t h e d e t a i ls o f G a l i le o 's t r e a t m e n t o f t h e c o n t i n u u m , D e s c a r t e s r e je c t s
t h e t h e o r y o f i n di vi s i bl e b u t e x p a n d a b l e v o i ds w i th t h e r e m a r k : T h e w h o l e o f
w h a t h e s a y s a b o u t r a r e f a c t i o n a n d c o n d e n s a t i o n is n o t h i n g b u t a s o p h is m . ~ ,
S i m i la r ly , G a l il e o 's p r o o f t h a t a s t r a ig h t l i n e is c o m p o s e d o f a n i n f i n it y o f
a c t u a l p o i n t s is d i s m i s s e d b y h i m a s o n l y a n i m a g i n a t i o n , p u r e a n d s im p l e. 5 3
T h i s j u d g m e n t a l o n e , i n c i d e n ta l l y , s e e m s t o m e s u f f i c i e n t t o d i s p o s e o f
G u e r o u l t ' s c o n t e n t i o n t h a t D e s c a r t e s c o n c e i v e d i n s ta n t s f r o m t h e a b s t r a c t a n d
i m p e r f e c t p o i n t o f v i ew o f c r e a t e d e x i s t e n c e a s i n f in i te l y s m a ll a c t u al th i n g s
( G u e r . , 2 7 5 / 1 9 5 ) .
T h i s d is m i s sa l o f G a l i le o 's p r o o f t h a t t h e l in e is c o m p o s e d o f a c t u a l
i n d iv i s ib l e s a s a n i m a g i n a t i o n is i t s e lf s i g n i f ic a n t i n t h e l i g h t o f D e s c a r t e s '
c o n t r a s t b e t w e e n b e i n g a b le m e r e l y to i m a g i n e s o m e t h i n g , a n d b e i n g a b le t o
p r o p e r l y u n d e r s t a n d it . T h u s , w e m a y t h i n k ( w it h G a l i le o ) t h a t w e c an i m a g i n e
a l a s t e l e m e n t i n a n i n f i n i t e d i v i s i o n , a n a c t u a l i n d i v i s i b l e ; b u t n o m a t t e r h o w
s m a l l w e i m a g i n e s u c h i n d i v is i bl e s to b e, w e n e c e s sa r i ly r e p r e s e n t t h e m i n o u r
i m a g i n a t i o n a s e x t e n d e d , a n d c a n t h u s c l e a r l y a n d d i s ti n c tl y c o n c e i v e t h e i r
d i vi si b il it y . T h u s o u r i m a g i n a t i o n d e c e i v e s u s : i n d i vi s ib l e s a n d t h e a c t u a l l y
i n f i n it e l y s m a l l a r e n o t d i s t i n c t ly c o n c e i v a b l e .
5, Descartes to M ersenne, l 1 October 1638,Correspondance CXL VI: 383: II manque en tout
ce qu'il dit de l 'infini, en ce que, n onobstant qu'il confesse que l'esprit hum ain, estant fini, n'est pas
capable de le com prend re, i l ne laisse pas d 'en discourir tout de m esm e que s ' il le comprenoit.
5, To ut ce qu'il dit de la rarefaction & condensation n'est qu'vn sophisme (ibid., 384).
53 II fait considerer vne ligne droite, descrite par le mo uuem ent d'vn cercle, po ur pr ou ue r
qu'eUe est com pos~e d'vne infinit~ de poins actu ce qu'il n'est qu'vne imagination toute pure
(ibid., 384).
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C O N T I N U O U S C R E A T I O N , C O N T I N U O U S T I M E 3 7 5
There is a similar failure of imagination with respect to infinite division,
which, as Beyssade observes (350), Descartes appeals to in his explanation of
the "catch" in Zeno's Achilles Paradox. The paradox, as Descartes himself
expounds it, is as follows: a tortoise, which has ten leagues' start on a horse
going ten times as fast as it, can never be overtaken by the horse, because while
the horse covers ten leagues the tortoise covers one more, and while the horse
covers this league the tortoise advances anoth er tenth o f a league further , and
so on to infinity."~4 Descartes has already set up a correct solution to the
paradox, by showing how a geometrically decreasing infinite series of finite
parts, such as r + v%o + r + . . . nevertheless adds up to a finite whole, in
this case r This he does entirely geometrically, without recourse to the idea of
a limit, by an ingenious application of the Method of Exhaustion. He consid-
ers a line AB, and subtracts 88 from the left side, and SAoths from the right
side. He then subtracts a fu rthe r iAoothfrom the left, and S/,ooths fro m the right,
and so on till the length of the line is exhausted "and one will have arrived
from both sides precisely at the point G" (446). But the ratio of 1:8 having
been preserved for all the lines subtracted, this must be the ratio of their
aggregata, AG:GB. So AG:AB = 1:9, and it follows that at the end of a nin th of
a league, the horse begins to overtake the tortoise. He then concludes: "And
the catch lies in that one imagines that this ninth part of a league is an infinite
quantity, because one divides it in one's imagination into an infinity of parts"
(ibid.). Thu s the paradox arises thro ugh a limitation of the imagination. One
can imagine an infinite division only by picturing an infinite collection of parts
in one's mind. But this seems to entail an infinite quantity, hence the catch.
However, by applying the methods of geometry, and without any appeal to
what happens a t infinity," one may und ers tand that when the division is
"done an actually infinite nu mber of times" (ibid., 446), the aggregate o f terms
will be '/9.
This example shows very nicely, I believe, how Descartes thought one
should tackle problems having to do with the actual infinite without subjecting
oneself in any way to the limitations of the imagination, or committing oneself
to the "last elements" o f an actually infinite division.
Thus, in conclusion, I maintain that Descartes not only did not hold that
durations were composed of an infinity of really discrete actual indivisibles,
but this is a view he could not have held.
M iddlebury College
L e t t e r t o C l e r s e li e r , J u n e / J u l y 1 6 4 6, A T . 4 : 4 4 5 - 4 7 . S h o w i n g a n ic e t o u c h o f h u m o r , D e s -
c a r t es s i g n s t h i s l e t t e r I a m i n f in i t e ly y o u r s , R e n &