Symbolic Logic, 2nd edition

EDITOR'S INTRODUCTION
The present volume is a most unusual one and meets a long- felt and important need. Recent years have witnessed a consid­
erable growth of interest in symbolic logic in the United States.
Americans have made important contributions to the subject, but these contributions have usually been in detached articles in the journals. Professor Lewis's A Survey of Symbolic Logic in 1918 traced the history of the most important developments of symbolic logic from Leibniz to the twentieth century and dis­cussed the relation of a “ system of strict implication" to systems of material implication and to the classic algebra of logic. But there has been no authoritative treatment of the field of sym­bolic logic in the light of developments of the last fifteen years, a treatment which would present constructively the achievements in symbolic logic by one who had taken part in making the achievements possible and believed heartily in the importance of this branch of philosophic thought. This present volume is just such a treatment. Its two authors have had wide experi­ence both as teachers of symbolic logic in the classroom and as writers on important problems in the field. Their experience is adequate guarantee that the book will prove useful and stimu­lating to many readers…