I W HEN it is said so often that the social sciences had their origin in philosophy it is surprising to find that no historian of any one of them has yet analyzed the particular kind of philosophy from which they came, namely, moral philosophy. Whatever the reasons for the neglect, these questions are fair: How can a political scientist interpret Grotius correctly if he extracts from Grotius' work only those chapters which deal with government and international law specifically? How much of Adam Smith's economics do we know if we neglect the background of The Wealth of Nations? Why in a definitive way should Adam Ferguson be called a sociologist when he can with equal right be called psychologist, political scientist, economist, jurist, anthropologist, and teacher of ethics and aesthetics as well? These men were moral philosophers, with interests as wide as the customs and institutions of man. To be a moral philosopher was to be an analyst and interpreter of the current mores, and at the same time a protagonist of new relationships thought by the philosopher to be more highly ethical and advantageous. Not only do we put a false light on the moral philosopher when we claim him in one of the social sciences as if he had no other affiliations, but we also fail to see the separate social sciences themselves in true historical perspective when we forget that they once had a very definite pattern of belonging together and of inhering as one mass in a common set of presuppositions. Twentieth century social scientists, and even twentieth century philosophers it is suspected, are in the habit of too completely equating moral philosophy with ethics. It is true that the ultimate aim of that discipline was to bring about human relationships which would be in advance, ethically, of current practice. In the course of argument, however, the moralists' material included discussions of human nature, social forces, progress, marriage and family relationships, economic processes, maintenance of government, international relations, elementary jurisprudence, primitive customs, history of institutions, religion, ethics, aesthetics -all topics of import in the social sciences of our day. This comprehensive table of contents has been consistently characteristic of moral philosophy since the days when the discussions of Socrates were transcribed. Within such a mass of material there was a definite pattern of arrangement of the different sections. Usually in the beginning the moralist would take the reader into his confidence somewhat by setting forth his aims, his starting points and his methods. Here occur those definitions of science and scientific procedure which still rise up to confront an investigator and which should be intensely interesting to students of methodology and to historians of ideas. After setting out in view his working tools the writer would next lay what he considered his foundation stone, his discussion of the facts of human nature. This discussion was the requirement of most importance, to his
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