『The Common Law』要約

Oliver Wendell Holmes Jr. published The Common Law in 1881, distilled from lectures he delivered at the Lowell Institute in Boston. The book opens with one of the most famous lines in American legal writing: that the life of the law has not been logic but experience. Holmes argues that judges do not merely deduce rules from fixed principles; they respond to felt necessities, moral intuitions, and the practical demands of their time, only later rationalizing outcomes as doctrine. Across its eleven lectures, Holmes traces the historical development of liability, crime, tort, property, and contract, drawing heavily on early English, Germanic, and Roman sources. A central framework is his distinction between the external standard of liability and the internal moral state of the actor: law judges conduct by what a reasonable person would have done, not by the defendant's private conscience. His treatment of criminal law separates intent from motive, and his analysis of torts builds toward the objective reasonable-person test. Holmes also develops the idea that law is a prediction of what courts will do, and that duties are essentially consequences attached to acts, a precursor to his later "bad man" theory of law. The book is not a casebook or a practitioner's manual; it is a work of legal theory and legal history. Its arguments influenced the rise of American legal realism and shaped how generations of jurists thought about precedent, responsibility, and the relationship between morality and law. For readers in law, it remains a foundational text on how doctrine actually forms.