Tad Schmaltz

Spinoza's Mediate Infinite Mode TAD M. SCHMALTZ IN PART I of the Ethics, Spinoza argued that a modification is infinite just in case it either "follows from the absolute nature of any attribute of God" or "follows from some attribute of God, as it is modified by such a modification" that is infinite. 1 The main purpose of this argument is to bolster the claim later in this text that a finite modification can follow from a divine attribute only insofar as that attribute is modified by another finite modification. 2 Thus it is understandable that in the section that contains the argument Spinoza did not actually affirm the existence of the two kinds of infinite modifications he mentioned, which following standard practice I call "immediate infinite modes" and "mediate infinite modes," respectively.3 Yet in this section he did 'E IP21,D-22,D, G II 65-66/Curley 429-3 o. In the text and notes of this paper I use the following abbreviations pertaining to Spinoza's writings: E: Ethics ; Ep.: Letters ; RDPP: Descartes' Principles of Philosophy ; CM: Appendix containing Metaphysical Thoughts ; KV: Short Treatise ; TdlE: Treatise on the Emendation of the Intellect ; G: C. Gebhardt, ed., Spinoza Opera, 4 vols. , cited by volume and page; Curley: E. Curley, trans, and ed., The Collected Works of..

This book is a systematic study of Descartes' theory of causation and its relation to the medieval and early modern scholastic philosophy that provides its proper historical context. The argument presented here is that even though Descartes offered a dualistic ontology that differs radically from what we find in scholasticism, his views on causation were profoundly influenced by scholastic thought on this issue. This influence is evident not only in his affirmation in the Meditations of the abstract scholastic axioms that a cause must contain the reality of its effects and that conservation does not differ in reality from creation, but also in the details of the accounts of body-body interaction in his physics, of mind-body interaction in his psychology, and of the causation that he took to be involved in free human action. In contrast to those who have read Descartes as endorsing the "occasionalist" conclusion that God is the only real cause, a central thesis of this study is that he accepted what in the context of scholastic debates regarding causation is the antipode of occasionalism, namely, the view that creatures rather than God are the causal source of natural change. What emerges from the defense of this interpretation of Descartes is a new understanding of his contribution to modern thought on causation.

I consider a somewhat obscure but important feature of Descartes’s physics that concerns the notion of the “force of rest.” Contrary to a prominent occasionalist interpretation of Descartes’s physics, I argue that Descartes himself attributes real forces to resting bodies. I also take his account of rest to conflict with the view that God conserves the world by “re-creating” it anew at each moment. I turn next to the role of rest in Malebranche. Malebranche takes Descartes to endorse his own occasionalist version of physics. However, he nonetheless rejects Descartes’s account of rest by appealing to the fact that whereas God’s production of motion requires a power beyond the mere power to create, his production of rest requires only the latter power. It turns out that this argument in Malebranche is incompatible with the sort of “re-creationist” account of divine conservation that he is widely thought to have inherited from Descartes.

This is a book-length study of two of Descartes's most innovative successors, Robert Desgabets and Pierre-Sylvain Regis, and of their highly original contributions to Cartesianism. The focus of the book is an analysis of radical doctrines in the work of these thinkers that derive from arguments in Descartes: on the creation of eternal truths, on the intentionality of ideas, and on the soul-body union. As well as relating their work to that of fellow Cartesians such as Malebranche and Arnauld, the book also establishes the important though neglected role played by Desgabets and Regis in the theologically and politically charged reception of Descartes in early modern France. This is a major contribution to the history of Cartesianism that will be of special interest to historians of early modern philosophy and historians of ideas.