"Throughout this profound, imaginative and keenly analytical work, [Fuller] demonstrates his continuing concern with the tension in morality and law between the 'is' and the 'ought'. . . . A book of ideas should . . . provoke and contribute new thoughts. This book does both."--Barry R. Mandelbaum, New York Law Forum
In this classic work the legal philosopher Lon L. Fuller explores the relationship between law and morality, distinguishing between the morality of duty and the morality of aspiration.