Logic is a subject that appears superficially to be neither inviting nor stimulating. It is, however, a discipline which, like the Molière character who was unaware that he had spoken prose all his life, everyone makes use or misuse of. It is the intention of Morris Cohen, the distinguished philosophy and exemplary representative of the tradition of humanistic thought, to introduce in A Preface to Logic the history and development of the theory of logic from the formal logic of Aristotle to the modern symbolic and probability theories.
It is not generally realized that logic does develop, that there are problems of thought which modern scientific method disclosed for which classical theory was incomplete and for which the new theory was formulated. Morris Cogen succeeds brilliantly in indicating what has happened to logic and why new developments occurred. Fundamentally, however, his is the attempt to illuminate the character of human thought and the procedures which man must adhere to if he is to deserve his definition as a rational being. A Preface to Logic contains two important appendices on the modern logicians F. H. Bradley and John Dewey.