It is a theory about the nature of the law which emphasises the role of reason in the law and which refuses to limit the role of reason to the application of deductive logic. In 1989, when the first edition of On Law and Reason appeared, this book was ground breaking for several reasons.
The Dilemma of Legal Reasoning: Moral Evaluation or Description of the Law?.- Rationality of Moral Judgments.- Rationality of Legal Reasoning.- The Ultimate Justification of Moral and Legal Reasoning.- What is Valid Law?.- The Doctrine of the Sources of the Law.- The Methods of Legal Reasoning.