The philosophy of mind is one of the fastest-growing areas in philosophy, not least because of its connections with related areas of psychology, linguistics and computation. This Companion is an alphabetically arranged reference guide to the subject, firmly rooted in the philosophy of mind, but with a number of entries that survey adjacent fields of interest. Written by an international assembly of the leading philosophers, the volume includes extensive cross-referencing, glossary entries, detailed bibliographies, and a comprehensive index. Among the entries themselves are series of 'self-profiles' by key figures of today, including Noam Chomsky, Donald Davidsion, Daniel Dennett, Fred Dretske, Jerry Fodor, David Lewis, Hilary Putnam, John Searle, and Robert Stalnaker.