The most exciting development in legal thinking since World War II has been the growth of interdisciplinary legal studies—the application of the social sciences and the humanities to law in the hope of making law less formalistic, more practical, better grounded empirically, bettered tailored to social goals. Judge Richard A. Posner has been a leader in this movement, and his new book explores its rapidly expanding frontier.

The book examines five principal areas or directions of interdisciplinary study: economics, history, psychology, the epistemology of law and the empirical study of law. These approaches are seen to interpenetrate and to compose a coherent body of legal theory—a unified framework for understanding such seemingly disparate phenomena as the economics of free speech, the intellectual history of economic analysis of law, the relation between income and liberty, the law of possession, the psychology of legal decisionmaking, the role of emotion in law, and the use of citation analysis to evaluate judges and law professors. The book carries on Posner’s project of analyzing the law as an institution of social governance.

Ambitious legal thinkers have become mesmerized by moral philosophy, believing that great figures in the philosophical tradition hold the keys to understanding and improving law and justice and even to resolving the most contentious issues of constitutional law. They are wrong, contends Richard Posner in this book. Posner characterizes the current preoccupation with moral and constitutional theory as the latest form of legal mystification—an evasion of the real need of American law, which is for a greater understanding of the social, economic, and political facts out of which great legal controversies arise. In pursuit of that understanding, Posner advocates a rebuilding of the law on the pragmatic basis of open-minded and systematic empirical inquiry and the rejection of cant and nostalgia—the true professionalism foreseen by Oliver Wendell Holmes a century ago.A bracing book that pulls no punches and leaves no pieties unpunctured or sacred cows unkicked, The Problematics of Moral and Legal Theory offers a sweeping tour of the current scene in legal studies—and a hopeful prospect for its future.