'This is an important contribution to the contemporary literature on Kant's theoretical philosophy. The book is distinguished by a novel main claim, an impressive grip on the relevant secondary literature (both past and present), a close examination of some typically neglected (but important) passages in the Critique of Pure Reason, and a sustained, rigorous, and lucid argument. No one, so far as I know, has argued for Kant's 'realism' in such a thorough way. Given both the novelty of the claim and the care with which it is supported, all future interpreters of Kant will have to take Westphal into account.' Gordon Brittain, Montana State University