In the original constituents of society, the human animal in its primitive state, economic processes were purely individual. The amount of food obtained by a given man bore direct relation to his own personal exertions. Other men were to him merely undesirable competitors for the same goods; and, the fewer these competitors were, the more goods remained for him. Therefore, he killed as many of his rivals as possible. Given a certain supply of needed food, as the edible beasts or fruits in a forest, and a certain number of individuals to get this food, each by his own exertions, it follows that, the more numerous the individuals, the less food to be obtained by each; and, conversely, the fewer the individuals, the more food to be obtained by each. Wherefore, the primitive savage slew his fellow-man at sight, on good economic grounds. This is the extreme of individual competition, perfectly logical, and, in its time, economically right. That time is forever past. The basic condition of human life is union; the organic social relation, the interchange of functional service, wherein the individual is most advantaged, not by his own exertions for his own goods, but by the exchange of his exertions with the exertions of others for goods produced by them together. We are not treating here of any communistic theory as to the equitable division of the wealth produced, but of a clear truth in social economics,—that wealth is a social product. Whatever one may believe as to what should be done with the wealth of the world, no one can deny that the production of this wealth requires the combined action of many individuals. From the simplest combination of strength that enables many men to overcome the mammoth or to lift the stone—an achievement impossible to one alone—to the subtle and complex interchange of highly specialized skilled labor which makes possible our modern house; the progress of society rests upon the increasing collectivity of human labor.