For the past twenty years Charles Morris has collected and co-ordinated the major developments in the field of communication, from the physical sciences to the arts, with the intention of formulating a comprehensive, reliable theory of signs. The result is this significant achievement that deserves to rank with the work of Ogden and Richards, Korzybski, and P. W. Bridgman. Signs, Language, and Behavior is not only an invaluable tool for the semantic specialist, but because it reaches into their domains it is of vital interest to scientists, philosophers, linguists, sociologists, psychologists, psychiatrists, educators, critics of the arts—to all, in fact, concerned with problems of meaning, language, and communication. For Dr. Morris considers signs in a wide variety of contexts: in relation to truth and belief, to poetry, religion, literature, morality, philosophy, and especially with reference to the individual in the contemporary world faced with interpreting and appraising the many complex signs around him.