Abstract

In this paper, I address the controversial issue around Locke’s account of a “superadded” power of thought. I first show that Locke uses the term “super­addition” in discussing the nominal distinction of natural kinds. This general observation applies to Locke’s account of thinking matter. Specifically, I attribute to him the following three theses: (1) the mind-body distinction is nominal; (2) there is no metaphysical repugnancy between them; and (3) their common ground—namely, substratum—can only be characterized in terms of its functional role. Examining each thesis and their interconnections, this paper casts light upon the Lockean type of mind-body union in “a system of matter fitly disposed.”