Blake Dutton

Indifference, Necessity, and Descartes's Derivation of the Laws of Motion BLAKE D. DUTTON WHILE WORKING ON Le Monde, his first comprehensive scientific treatise, Des- cartes writes the following to Mersenne: "I think that all those to whom God has given the use of this reason have an obligation to employ it principally in the endeavor to know him and to know themselves. This is the task with which I began my studies; and I can say that I would not have been able to discover the foundations of physics if I had not looked for them along that road". ' As the letter makes clear, knowl- edge of the foundations of Cartesian physics is inextricably linked to the knowledge of God. Unfortunately, Descartes never explains why this is the case, and the relation in which his theistic doctrine stands to his physics remains unspecified. In what follows I wish to clarify that relation by examining some of the problems surrounding Descartes's attempt to locate the metaphysical founda- tions of his physics in his doctrine of God. I begin my analysis with a discussion of the doctrine of divine indifference and argue that this doctrine is of great importance to any interpretation of the foundations of Cartesian physics, insofar as it provides Descartes with a rationale for dismissing the appeal to final causation in scientific explanation. Insofar as this is the case, it supplies an important piece of his justification for mechanism...

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:Descartes and the Last ScholasticsBlake D. DuttonRoger Ariew. Descartes and the Last Scholastics. Ithaca: Cornell University Press, 1999. Pp. xi + 230. Cloth, $42.50.The attempt to understand Descartes vis-à-vis the scholastic tradition dates back to the studies of Etienne Gilson early in this century. Though Descartes saw himself as a revolutionary who would overthrow the Aristotelianism entrenched in the universities, Gilson was able to demonstrate his reliance upon a variety of scholastic sources for important terminology, distinctions, and arguments which permeate his writings. Unfortunately, this line of investigation was largely ignored among Anglo-American scholars who were generally hostile to Scholasticism and uninterested in contextualizing Descartes's thought. However, since the mid-eighties there has been a distinct shift in attitude as scholars have increasingly turned their attention to the place of Scholasticism within Descartes's intellectual environment. Among these, Roger Ariew has to be counted as one of the most sophisticated, and his new book, Descartes and the Late Scholastics, marks an important contribution to the growing literature on the topic.Ariew's book is actually a collection of essays published over the last decade, including two which he co-authored with Marjorie Grene. Many of these have been substantially expanded to include fresh material and reworked so as to give the whole a greater sense of continuity. After a marvelous opening chapter in which he lays out his overall account of Descartes's attitude towards Scholasticism, Ariew presents the remaining essays in two large groups: those dealing with the immediate context of Descartes's thought and those dealing with its reception through the early part of the eighteenth century.Among the more interesting results of the first group of studies is Ariew's claim that the scholastic climate in and around Paris during Descartes's lifetime was predominately Scotistic rather than Thomistic. He shows this by looking at positions taken by a number of Parisian schoolmen on important issues which typically divided Scotists and Thomists. Ariew goes on to argue that not only was the Parisian environment Scotistic, but that Descartes aligned himself with the Scotists on many key issues in both physics (e.g., that time is independent of motion) and metaphysics (e.g., that the principle of individuation is a form). This is certainly an intriguing claim since most studies of this type have viewed Descartes in relation to Aquinas and those Jesuit thinkers who were broadly Thomistic in outlook. In bringing to light this Scotistic background, Ariew has opened up an important new line of inquiry.Other topics included in this first section are the literary and philosophical background [End Page 275] to the "new way of ideas" of which Descartes is a founder, the place of Descartes's doctrine of matter and form in seventeenth century debates over hylomorphism, and the reaction of Scholastics to the observational results of the new astronomy. What emerges in these essays is not only a highly nuanced view of Descartes's relation to Scholasticism, but an important corrective to still prevalent views of the Scholastics as reactionary and blindly opposed to developments within the new science. This last point is made with particular force in the fifth essay entitled "Scholastics and the New Astronomy." There Ariew argues that the astronomical observations of Galileo et alia were not in themselves decisive for overthrowing the Aristotelian cosmology as it had been articulated in the seventeenth century. This is because scholastic astronomers were generally accepting of such findings (e.g., sunspots) and were able to accommodate them within their own systems by making relatively minor adjustments. Although these systems ultimately proved themselves inadequate, Ariew makes a strong case that the Aristotelianism of the seventeenth century was sufficiently fluid to accommodate most of what the astronomers offered up. Thus the necessity for a radical overhaul of basic philosophical and scientific assumptions was by no means as evident as standard histories of this period would have us believe.The second section of the book is dedicated to debates over Cartesianism and its fate in the generations immediately following Descartes's death. Here Ariew provides a wealth of detail about various condemnations of Cartesianism, a comparative study of...

In lieu of an abstract, here is a brief excerpt of the content:Physics and Metaphysics in Descartes and GalileoBlake D. Duttonin his classic biography of Descartes, Charles Adam passes this judgment on the influence of Galileo’s condemnation on the development of Cartesian metaphysics:Sans la condemnation de Galilée, nous aurions eu tout de même la métaphysique de Descartes. Mais nous ne l’aurions problement pas eue sous la forme volumineuse qu’elle a prise avec toutes ces Objections et Reponses, qui font plus que quintupler les Méditations primitives.1(AT XII, 306)While not charging Descartes with dissimulation, Adam argues that the metaphysics was developed to deflect attention from the heart of the Cartesian system—its mechanistic physics—which posed a direct challenge to the reigning Aristotelianism. In his words, it served primarily as a “tent... to cover the merchandise (le pavilion... couvrir la marchandise)”(AT XII, 306).2Adam is certainly not alone in pointing to the Galileo affair as grounds for raising suspicions about the role of the metaphysics in Descartes’ larger work. In a recent biography, itself destined to become a classic, Stephen Gaukroger takes a similar line, arguing that it was Galileo’s failure to convince his opponents through arguments drawn from natural philosophy that prompted Descartes to seek acceptance of his own natural philosophy though metaphysical legitimation. Had Galileo not been silenced there would have been no impetus for Descartes to have developed a metaphysical argument; natural-philosophical [End Page 49] arguments would have sufficed.3 Thus, in the words of Gaukroger, Descartes’ project of metaphysical legitimation was “a task which he never even contemplated before the condemnation of Galileo in 1633, and... was a direct response to that condemnation.”4 If we are to believe Adam and Gaukroger, then, Descartes was first and foremost a natural philosopher whose extended venture into metaphysics was primarily a strategic response to the events of 1633.Despite the many merits of this line of interpretation, I believe it is trouble-some insofar as it isolates Descartes’ reaction to the condemnation from both his criticisms of Galileo’s science and his views on the relation between science and theology. In doing so, it overstates the degree to which Cartesian science can itself be isolated from Cartesian metaphysics. In what follows, then, I will contextualize Descartes’ reaction to the Galileo affair by examining his comments on Galileo’s scientific work and the relation of his own views on science and theology to those of Galileo. Two results will emerge. First, we will see that if we fail to take Descartes’ search for metaphysical foundations as having a genuinely scientific motivation, not only will we render his criticisms of Galileo’s science unintelligible, but we will fail to understand the distinctive nature of his science vis-à-vis Galileo’s. This will become clear as we examine the work of each on motion and the fall of bodies. Second, we will see that it is only by taking Descartes’ metaphysical commitments as integral to his science that we can make sense of the divergent ways in which he and Galileo resolved the question of the relation of science to theology. Both, it is clear, sought to guarantee the autonomy of science, yet each did so in a way which mirrored his unique conception of science and its relation to metaphysics. All of this, I conclude, deflates the utility of appealing to Descartes’ concern over the Galileo affair as a means of assigning a primarily strategic or extra-scientific role to his metaphysics. [End Page 50]1. descartes on galilean scienceAlthough they were contemporaries, there is no evidence that Descartes and Galileo ever met or corresponded. There is also no strong evidence that the work of either had any significant influence on the work of the other, despite the fact that Descartes reports having leafed through the Dialogue Concerning the Two Chief World Systems and having obtained a copy of the Two New Sciences.5 However, we do find several references to Galileo in Descartes’ correspondence from which a general attitude toward the Italian scientist becomes reasonably clear. While occasionally being complimentary, Descartes appears to have been largely unimpressed and even claims to have arrived at several...