Carl Sagan The Washington Post Book World A breath of fresh air.

Richard Dawkins author of The Blind Watchmaker A surpassingly brilliant book. Where creative, it lifts the reader to new intellectual heights. Where critical, it is devastating.

Richard Rorty Lingua Franca One of our most original and most readable philosophers....Once in a blue moon an analytic philosopher comes along who redeems his subdiscipline by combining professional persnicketiness with a romantic spirit, a vivid imagination, and a sense of humor.

John Gribbin Sunday Times, London This is the best single-author overview of all the implications of evolution by natural selection available....Lucid and entertaining.

Jim Holt The Wall Street Journal Dennett is a philosopher of rare originality, rigor, and wit. Here he does one of the things philosophers are supposed to be good at: clearing up conceptual muddles in the sciences.