The paper offers a new account of Spinoza's conception of “substance”, the fundamental building block of reality. It shows that it can be demonstrated apriori within Spinoza's metaphysical framework that (i) contrary to Idealist readings, for Spinoza there can be no substance that is not determined or modified by some other entity produced by substance; and that (ii) there can be no substance (and hence no being) that is not a thinking substance.

ABSTRACTThis paper attempts to shed light on Hegel’s recurring comment that Spinoza’s philosophy lacks the ‘principle of individuality’. It shows that this criticism can have three distinct meanings: that Spinozism cannot account for the multiplicity of finite individuals; that Spinozism leads to a moral devaluation of the finite individual; the form of substance is indifferent and lacks a differentiating principle. It is shown that Hegel argued, somewhat incoherently, for all three.