Professor Hurford searches a wide range of evidence for the answers to these central questions, including degrees of trust, the role of hormones, the ability to read minds, and the willingness to cooperate. Expressing himself congenially in consistently colloquial language the author builds up a vivid picture of how mind, language, and meaning evolved over millions of years. His book is a landmark contribution to the understanding of linguistic and thinking processes, and the fullest account yet published of the evolution of language and communication. "A wonderful read - lucid, informative, and entertaining, while at the same time never talking down to the reader by sacrificing argumentation for the sake of 'simplicity'. Likely to be heralded as the major publication dealing with language evolution to date. Frederick J. Newmeyer, University of Washington