Written from the standpoint of the social behaviorist, this treatise contains the heart of Mead's position on social psychology. The analysis of language is of major interest, as it supplied for the first time an adequate treatment of the language mechanism in relation to scientific and philosophical issues.

"If philosophical eminence be measured by the extent to which a man's writings anticipate the focal problems of a later day and contain a point of view which suggests persuasive solutions to many of them, then George Herbert Mead has justly earned the high praise bestowed upon him by Dewey and Whitehead as a 'seminal mind of the very first order.'"--Sidney Hook, "The Nation"