Adapted from The Path of Law, by Oliver Wendell Holmes, Jr. (1897)

When we study law we are not studying a mystery but a well known profession. We are studying what we shall want in order to appear before judges, or to advise people in such a way as to keep them out of court. The reason why it is a profession, why people will pay lawyers to argue for them or to advise them, is that in societies like ours the command of the public force is intrusted to the judges in certain cases, and the whole power of the state will be put forth, if necessary, to carry out their judgments and decrees. People want to know under what circumstances and how far they will run the risk of coming against what is so much stronger than themselves, and hence it becomes a business to find out when this danger is to be feared. The object of our study, then, is prediction, the prediction of the incidence of the public force through the instrumentality of the courts.

The means of the study are a body of reports, of treatises, and of statutes, in this country and in England, extending back for six hundred years, and now increasing annually by hundreds. In these sibylline leaves are gathered the scattered prophecies of the past upon the cases in which the axe will fall. These are what properly have been called the oracles of the law. Far the most important and pretty nearly the whole meaning of every new effort of legal thought is to make these prophecies more precise, and to generalize them into a thoroughly connected system. The process is one, from a lawyer's statement of a case, eliminating as it does all the dramatic elements with which his client's story has clothed it, and retaining only the facts of legal import, up to the final analyses and abstract universals of theoretic jurisprudence. The reason why a lawyer does not mention that his client wore a white hat when he made a contract, while Mrs. Quickly would be sure to dwell upon it along with the parcel gilt goblet and the sea-coal fire, is that he foresees that the public force will act in the same way whatever his client had upon his head. It is to make the prophecies easier to be remembered and to be understood that the teachings of the decisions of the past are put into general propositions and gathered into textbooks, or that statutes are passed in a general form. The primary rights and duties with which jurisprudence busies itself again are nothing but prophecies. One of the many evil effects of the confusion between legal and moral ideas, about which I shall have something to say in a moment, is that theory is apt to get the cart before the horse, and consider the right or the duty as something existing apart from and independent of the consequences of its breach, to which certain sanctions are added afterward. But, as I shall try to show, a legal duty so called is nothing but a prediction that if a man does or omits certain things he will be made to suffer in this or that way by judgment of the court; and so of a legal right.

The number of our predictions when generalized and reduced to a system is not unmanageably large. They present themselves as a finite body of dogma which may be mastered within a reasonable time. It is a great mistake to be frightened by the ever-increasing number of reports. The reports of a given jurisdiction in the course of a generation take up pretty much the whole body of the law, and restate it from the present point of view. We could reconstruct the corpus from them if all that went before were burned.

Adapted from The Common Law by Oliver Wendell Holmes, Jr. (1881)

If it were necessary to trench further upon the field of morals, it might be suggested that the dogma of equality applied even to individuals only within the limits of ordinary dealings in the common run of affairs. You cannot argue with your neighbor, except on the admission for the moment that he is as wise as you, although you may by no means believe it. In the same way, you cannot deal with him, where both are free to choose, except on the footing of equal treatment, and the same rules for both. The ever-growing value set upon peace and the social relations tends to give the law of social being the appearance of the law of all being. But it seems to me clear that the ultima ratio, not only regum, but of private persons, is force, and that at the bottom of all private relations, however tempered by sympathy and all the social feelings, is a justifiable self-preference. If a man is on a plank in the deep sea that will only float one, and a stranger lays hold of it, he will thrust him off if he can. When the state finds itself in a similar position, it does the same thing.

The considerations that answer the argument of equal rights also answer the objections to treating man as a thing, and the like. If a man lives in society, he is liable to find himself so treated. The degree of civilization which a people has reached, no doubt, is marked by their anxiety to do as they would be done by. It may be the destiny of humanity that the social instincts shall grow to control our actions absolutely, even in anti-social situations. But they have not yet done so, and as the rules of law are or should be based upon a morality that is generally accepted, no rule founded on a theory of absolute unselfishness can be laid down without a breach between law and working beliefs.

If it be true, as I shall presently try to show, that the general principles of criminal and civil liability are the same, it will follow from that alone that theory and fact agree in frequently punishing those who have been guilty of no moral wrong, and who could not be condemned by any standard that did not avowedly disregard the personal peculiarities of the individuals concerned. If punishment stood on the moral grounds that are proposed for it, the first thing to be considered would be those limitations in the capacity for choosing rightly that arise from abnormal instincts, want of education, lack of intelligence, and all the other defects which are most marked in the criminal classes. I do not say that they should not be, or at least I do not need to for my argument. I do not say that the criminal law does more good than harm. I only say that it is not enacted or administered on that theory.