This book presents a lifetime of reflection by a scientist of language on the broader implications of his scientific work. The title of this volume, What Kind of Creatures Are we? conveys just how broad the implications are meant to be. They cover an impressive range of fields: theoretical linguistics, cognitive science, philosophy of science, history of science, evolutionary biology, metaphysics, the theory of knowledge, the philosophy of language and mind, moral and political philosophy, and, even briefly, the ideal of human education.