This paper argues that Spinoza held substances other than God to be inconceivable. It uses this claim to develop a novel response to the Problem of Other Substances, the problem of explaining why some of Spinoza’s proofs for God’s existence cannot be used to prove the existence of a non-divine substance instead.

Are there moral constraints on the pursuit of the good? Our intuitions suggest that we may not use another person as a means to achieve a good outcome, even if that good outcome reduces the amount of using-as-a-means that occurs overall. These intuitions are assumed to be incompatible with consequentialism and to show the need for a deontological constraint on using others as a means. This assumption is a mistake. In this paper, I show that consequentialists can justify the same (...) case-based intuitions that are thought to support a moral constraint on using others as a means. (shrink)

François Lamy, a Benedictine monk and Cartesian philosopher whose extensive relations with Arnauld, Bossuet, Fénélon, and Malebranche put him into contact with the intellectual elite of late-seventeenth-century France, authored the very first detailed and explicit refutation of Spinoza’s Ethics in French, Le nouvel athéisme renversé. Regrettably overlooked in the secondary literature on Spinoza, Lamy is an interesting figure in his own right, and his anti-Spinozist work sheds important light on Cartesian assumptions that inform the earliest phase of Spinoza’s critical reception (...) in the seventeenth-century. I begin by presenting Lamy’s life and the contentious state of Spinoza’s French reception in the 1680 and 1690s. I then discuss a central argument in Lamy’s refutation, namely the Cartesian objection that Spinoza’s account of the conceptual independence of attributes is incompatible with the theory of substance monism. Contrasting Lamy’s objection with questions put to Spinoza by de Vries and Tschirnhaus, I maintain that by exhibiting the direction Spinoza’s views on substance and attribute took in maturing we may accurately assess the strength of Spinoza’s position vis-à-vis his Cartesian objector, and I argue that, in fact, Spinoza’s mature account of God as an expressive ens realissimum is not vulnerable to Lamy’s criticism. In conclusion, I turn to Lamy’s objection that Spinoza’s philosophy is question-begging in view of Spinoza’s account of God, and I exhibit what this point of criticism tells us about the intentions of the first French Cartesian rebuttal of the Ethics. (shrink)

ABSTRACTMost of Spinoza’s arguments for God’s existence do not rely on any special feature of God, but instead on merely general features of substance. This raises the following worry: those arguments prove the existence of non-divine substances just as much as they prove God’s existence, and yet there is not enough room in Spinoza’s system for all these substances. I argue that Spinoza attempts to solve this problem by using a principle of plenitude to rule out the existence of other (...) substances and that the principle cannot be derived from the PSR, as many claim.Abbreviation: PSR: Principle of Sufficient Reason. (shrink)

I propose a new interpretation of Spinoza’s obscure but important concept of ‘expression’. Any account of Spinozistic expression must be able to fulfil two principal requirements. First, it must be...

I argue that, against what is commonly believed, Spinoza’s use of the relation of constitution to characterize the relation between attributes and the essence of a substance does not indicate that, for him, there must be a numerical identity between each attribute and the essence constituted by that attribute. To do this, I follow a twofold strategy. First, I contend that the claim that because in Spinoza’s time constitution was understood as a one- to-one relation is mistaken: the main logicians (...) of Spinoza’s time, all Cartesian philosophers, believe that the constitution of an essence can be a many-to-one relation. I show that Spinoza can both accept that constitution is a many-one relation and share Descartes’ understanding of this relation. Second, I defend the claim that Spinoza’s use of constitution in the Ethics is consistent with these logicians’ account of constitution. In particular, I focus on Spinoza’s inclusion of the intellect in the definition of attribute and his definition of God. (shrink)