Abstract

JOHN YOLTON HAS CONTRIBUTED A Locke Dictionary as a recent addition to his many works on the life and philosophy of John Locke. In the entries on “abstraction” and on “abstract or general ideas ” in that text, Yolton makes some rather bold assertions. He argues that, despite Berkeley’s attack on Locke’s theory of abstract or general ideas, Locke’s theory is in fact quite similar to Berkeley’s own account. In the course of this discussion, Yolton concludes that, for Locke, abstract or general ideas are fictions and that they exist only as “modes of mind.” In this paper I discuss the Lockean theory of abstraction and explain the meaning Locke gives to the term “fiction,” showing that, for Locke, to call an idea a fiction is by no means to say that the idea exists only as a mode of mind. I also show why Locke’s theory of abstraction cannot be understood to be similar to Berkeley’s account in the way Yolton suggests, focusing on the central point of Berkeley’s criticisms of Locke and emphasizing the essential difference between the two accounts.