This volume, Grice's first book, includes the long-delayed publication of his enormously influential 1967 William James Lectures. But there is much, much more in this work. Paul Grice himself has carefully arranged and framed the sequence of essays to emphasize not a certain set of ideas but a habit of mind, a style of philosophizing.

Grice has, to be sure, provided philosophy with crucial ideas. His account of speaker-meaning is the standard that others use to define their own minor divergences or future elaborations. His discussion of conversational implicatures has given...