Human evolution involves the development of a number of individual animals into specialised functionaries of organic social life. This requires the gradual assumption of new faculties, new desires, new instincts, and new activities; and the gradual disuse and discarding of older ones. The egoistic mental make-up of a solitary animal, of a low savage, of any reversionary self-supporting human hermit, is advantageous to him as a separate creature; but disadvantageous to a society to which he might become attached, and, if he was so attached, to himself. A given society, in any age, possesses certain dominant ideas and feelings proper to it; and the individuals manifesting most of those ideas and feelings are most beneficial to that society and so to themselves. But if members of a given society persist in maintaining and acting upon social ideals of a previous age, they are injurious to their society and so to themselves. Social evolution, in any given place and time, is visibly checked by the number of persons who do not keep up with it; but insist on feeling and thinking after long-past standards, and trying to act on that basis. This peculiar persistence of social rudiments in all stages of our progress requires some special explanation. When a given social process, once useful, then useless, then increasingly injurious, continues to force itself upon a growing civilisation, there must be some strong agency to account for it. Naturally, it would have been gradually eliminated by proven undesirability, as cartwheels of solid wood were eliminated. In our material development we have moved steadily on, growing into ever newer and better methods, simplifying, cheapening, quickening, easing, following nature’s methods exactly—the conservation of energy—the line of least resistance. Our American industrial supremacy is attributed to precisely this willingness to grow, to discard the old things, to our constant resort to the scrap-heap. But in social development we seem to have no scrap-heap, or never to use one unless compelled to, making history a sort of sacred junk-shop. In business life, that is, in its material processes, we eagerly accept the new. In social life, in all our social processes, we piously, valiantly, obdurately, maintain the old. Why? Because of the peculiar effect of the human brain on human action—the relation between concept and conduct. In adaptation to our physical environment, whether the original face of nature, or the latest inventions in mechanics, we have material relations to deal with, and have learned how. Social relations are psychic. That a steel spade is better than a wooden one is easily proven to the hand and eye. That a democracy is better than a despotism is not so simple a proposition. The laws of the hydraulic press are established by visible experiment; but the laws of the distribution of wealth work in another medium, and are more difficult to establish.