Before presenting his own account of value in the Ethics, Spinoza spends much of EIAppendix and EIVPreface attempting to refute a series of axiological ‘prejudices’ that he takes to have taken root in the minds of his readership. In doing so, Spinoza adopts what might be termed a ‘genealogical’ argumentative strategy. That is, he tries to establish the falsity of imagined readership’s prejudices about good and bad, perfection and imperfection, by first showing that the ideas from which they have arisen (...) are themselves false. Many elements of this genealogy, however, remain unclear. First, both the nature of the metaethical prejudices Spinoza believes we have been labouring under, and the metaphysical prejudices that he takes to have given rise to them, continue to attract widespread disagreement. Although much less commented on, it is also not entirely obvious why Spinoza takes the one to have engendered the other. In this article, I attempt to clarify Spinoza’s reasoning in both of these respects, ultimately concluding that Spinoza offers us two accounts of how this process has occurred, the first beginning from an anthropocentric doctrine of divine providence, the second from more secular, perhaps more purely Aristotelian metaphysical tradition. (shrink)

Encyclopedia entry for the Springer Encyclopedia of EM Phil and the Sciences, ed. D. Jalobeanu and C. T. Wolfe.

This article presents a novel reading of Descartes’s critique of the traditional syllogistic. The reading differs from those previously presented by scholars who regard Descartes’s critique as a version of a well-known argument: that syllogisms are circular or non-ampliative and thus trivial. It is argued that Descartes did not see syllogisms as defective in themselves. For him the problem was rather that anyone considering a valid and informative syllogism must already know, by an intuition wholly independent of the syllogism, that (...) the conclusion follows from the premises. Moreover, without such an intuition the syllogistic on its own is incapable of determining whether the consequence truly holds. Thus the syllogistic is useless unless accompanied by an intuition that renders it otiose. This reading of Descartes’s view is supported and explained by examples drawn from Descartes’s writing and from the Port-Royal Logic—one of the first attempts to develop a logical system on Cartesian principles. (shrink)

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)

Like many of their contemporaries Bernard Nieuwentijt and Pieter van Musschenbroek were baffled by the heterodox conclusions which Baruch Spinoza drew in the Ethics. As the full title of the Ethics—Ethica ordine geometrico demonstrata—indicates, these conclusions were purportedly demonstrated in a geometrical order, i.e. by means of pure mathematics. First, I highlight how Nieuwentijt tried to immunize Spinoza’s worrisome conclusions by insisting on the distinction between pure and mixed mathematics. Next, I argue that the anti-Spinozist underpinnings of Nieuwentijt’s distinction between (...) pure and mixed mathematics resurfaced in the work of van Musschenbroek. By insisting on the distinction between pure and mixed mathematics, Nieuwentijt and van Musschenbroek argued that Spinoza abused mathematics by making claims about things that exist in rerum natura by relying on a pure mathematical approach. In addition, by insisting that mixed mathematics should be painstakingly based on mathematical ideas that correspond to nature, van Musschenbroek argued that René Descartes’ natural-philosophical project abused mathematics by introducing hypotheses, i.e. ideas, that do not correspond to nature. (shrink)

Spinoza on Reason, by LeBuffeMichael. Oxford: Oxford University Press, 2017. Pp xi + 217.