Leibniz argues that Cartesian extension lacks the unity required to be a substance. A key premise of Leibniz’s argument is that matter is a collection or aggregation. I consider an objection to this premise raised by Leibniz’s correspondent Burchard de Volder and consider a variety of ways that Leibniz might be able to respond to De Volder’s objection. I argue that it is not easy for Leibniz to provide a dialectically relevant response and, further, that the difficulty arises from Leibniz’s (...) commitment to part-whole priority in the case of material wholes, a commitment not shared by De Volder. One major implication is that Leibniz relies on a bottom-up conception of material things, which makes his argument vulnerable to objections stemming from certain types of monist positions. (shrink)

The distinction between the mental operations of abstraction and exclusion is recognized as playing an important role in many of Descartes’ metaphysical arguments, at least after 1640. In this paper I first show that Descartes describes the distinction between abstraction and exclusion in the early Rules for the Direction of the Mind, in substantially the same way he does in the 1640s. Second, I show that Descartes makes the test for exclusion a major component of the method proposed in the (...) Rules. Third, I argue that in Rule 14 the exclusion-abstraction distinction is connected to a theory of distinctions, which includes a notion of real distinction as essentially tied to the imagination. This sheds light on Descartes’ development in and after the Rules. (shrink)

Descartes notoriously characterizes substance in two ways: first, as an ultimate subject of properties ; second, as an independent entity. The characterizations have appeared to many to diverge on the definition as well as the scope of the notion of substance. For it is often thought that the ultimate subject of properties need not—and, in some cases, cannot—be independent. Drawing on a suite of historical, textual, and philosophical considerations, this essay argues for an interpretation that reconciles Descartes's two characterizations. It (...) proposes that both characterizations invoke a type of independence that obtains just in case there is no relation to another entity that holds by the nature of the entity in question. Even though the ultimate subject of properties is sometimes not independent in other respects, it satisfies this independence-by-nature condition. (shrink)

This essay offers an interpretation of Descartes’ treatment of the concepts of place and space in the Principles of Philosophy. On the basis of that interpretation, I argue that his understanding and application of the concept of space supports a pluralist interpretation of Descartes on extended substance. I survey the Scholastic evolution of issues in the Aristotelian theory of place and clarify elements of Descartes’ appropriation and transformation thereof: the relationship between internal and external place, the precise content of the (...) claim that space and body are really identical, and the way we conceptually distinguish space from body. Descartes applies his concept of space in ways that illuminate the metaphysical structure of extension. In particular, he uses the concept to specify the degree to which finite parts of matter are independent of each other. I argue that for Descartes, conceiving extension as indivisible is an artifact of conceiving it as a space. That is, pace the monistic reading of Cartesian extended substance, regarding extension as indivisible is an artifact of conceiving it in a way more removed from its real nature. (shrink)

Integrating cosmological and ontological lines of reasoning, I argue that there is a self-necessary being that (a) serves as the sufficient condition for everything, that (b) has the most perfect collection of whatever attributes of perfection there might be, and that (c) is an independent, eternal, unique, simple, indivisible, immutable, all-actual, all-free, all-present, all-powerful, all-knowing, all-good, personal creator of every expression of itself that everything is. My cosmo-ontological case for such a being, an everything-maker with the core features ascribed to (...) the God of classical theism, addresses the standard worries plaguing these lines of reasoning: (1) the richness required of such a being dissolves it into many beings; (2) the metaphysical possibility of such a being is assumed on insufficient grounds; (3) the features we ascribe to such a being are mere human-all-too-human projections. (shrink)

It is a matter of continuing scholarly dispute whether Descartes offers a metaphysics of the material world that is “monist” or “pluralist.” One passage that has become crucial to this debate is from the Synopsis of the Meditations, in which Descartes argues that since “body taken in general” is a substance, and since all substances are “by their nature incorruptible,” this sort of body is incorruptible as well. In this article I defend a pluralist reading of this passage, according to (...) which there are indefinitely many bodies-taken-in-general, each of which counts as an incorruptible material substance. However, I also consider some surprising features of the argument in the Synopsis. One is that this argument conflicts with the implication in Descartes that any two “really distinct” substances can each exist without the other existing. Another is that the argument tends to undermine his suggestion that there is room at a fundamental metaphysical level for ordinary material objects. (shrink)

The doctrine of the conceptual priority of the perfect (CPP) is the claim that the concept of the perfect is prior to that of the imperfect insofar as possessing the latter presupposes a grasp of the former, but not vice versa. The goals of this study are to provide an account and defense of the Cartesian argument for CPP, to determine the consequences of this priority for the relationship between our concepts of human and divine properties, and to explore its (...) implications for bottom-up accounts of theological concept formation. I argue that the predicates “perfect” or “infinite” in Descartes’ version of CPP are equivalent to “true” or “genuine” and thus function in the same way they would in geometrical examples where the perfection at issue is definitive of the kind and where imperfection constitutes falling short of the kind. I can thus be said to have the idea of a “perfect” circle (of that which is “infinitely” circular, as it were) merely by virtue of having the idea of a circle, yet I cannot apprehend something as imperfect or finite insofar as it resembles but fails to be a circle unless I already possess a concept of the kind in question—a true or perfect circle. CPP thus implies a qualitative distinction between the perfect and imperfect that, when applied to God and creation, is consistent with a theory of analogy. Unlike traditional ‘bottom-up’ theories of analogy, however, CPP entails a ‘top-down’ order of derivation in which concepts of creaturely perfections are derived (via a sort of ‘partial negation’) from concepts of divine ones. The ‘top-down’ order of derivation yields epistemological advantages over the traditional approach, which had always struggled to explain how we can derive analogical concepts of God from creatures. Further, CPP enables its proponents to address the classic anthropomorphism critiques leveled at practitioners of Perfect Being Theology. Though I acknowledge that CPP is not without its own weaknesses, I present a largely sympathetic account of the argument and its relevance for contemporary philosophy of religion. (shrink)