Since its first appearance in 1979, this work has established itself as a classic of legal philosophy. This study focuses on current jurisprudential debate between the "positivist" views of Herbert Hart and the "rights thesis" of Ronald Dworkin. MacCormick provides a critical analysis of the Dworkin position while also modifying Hart's. It stands firmly on its own as a contribution to an extensive literature. Now available in paperback, and with a new foreword by the author, this popular book will continue to be of use to students and teachers of law, legal theory, and philosophy.MacCormick, D. Neil is the author of 'Legal Reasoning and Legal Theory', published 1995 under ISBN 9780198763840 and ISBN 0198763840.