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)

This paper argues for the need of philosophical translator-advocates to overcome the (would-be) limitations produced by the linguistic narrowness of analytic philosophy. It draws on a model used to analyze epistemic communities in order to characterize a form of linguistic injustice. In particular it does so by treating language as an epistemic barrier to entry of ideas and people and by treating philosophical translator-advocates as engaged in a form of arbitrage. Along the way I specify some necessary and jointly sufficient (...) characteristics of a philosophical translator-advocate. My argument is illuminated and vivified with examples from the history of analytic philosophy and other episodes from the history of philosophy. (shrink)