is part of the group which constrains and guides every other individual. There are, in fact, many sets of moral values: on the one hand, the social moral values _par excellence_, which the group will _enforce_ in various ways; and then, for each individual, his own moral values, which may correspond qualitatively more or less with the group values, or may antagonize them. But the Moral Law is the will of the group. It is no simple composite of the moral values of individuals. It has its organic interrelations with all phases of social life. Economic changes modify it, legal changes modify it, religious values modify it, all phases of social life are expressed in it. In legal theory, we find these three types of doctrine also. The first type is clearly indicated in the general attitude of American and English courts, especially toward the common law, though it influences their interpretation of all law. The law is something which the mind of man may find out, but may not make. If a new situation arises, the court "finds" the law--in theory the principle "discovered" by the court was in the common law at the beginning. Of course, we know that the judge invents the rule he makes, to fit a novel case, but the judge himself will not admit it. The theory of the law and the theory of morality have developed in close connection, and the notion of "natural right" is a juristic as well as a moral idea. At the other extreme, we have from certain recent students of law the doctrine that "The Law" is a myth, that there is nothing but the particular opinion of a particular judge at a particular time. Individualism cannot go so far in legal theory as to give every individual in society a chance to put his oar in, and have a separate law for himself! The social and institutional character of law is too obvious to permit that. But individualism has gone so far in legal theory as to deny all objectivity to law except in a given decision in a particular case. In between these two extreme views, appear the views of writers like Savigny, or Professor Munroe Smith, for whom the law is a changing product of social psychology, volitional[27] rather than intellectual in character, objective enough to the individual who violates it, or the judge who seeks to pervert it, but none the less not outside the minds and interests of men. In Professor Munroe Smith's phrase, law is "that part of the social order which by virtue of the social will may be supported by physical force."[28] I venture to describe this type of legal theory as the "social value" theory of the law. In the chapter on "The Reconciliation of Statics and Dynamics," _infra_, I have cited certain opinions of Mr. Justice Holmes which apply it, and even bring into it the notions of the marginal analysis.