In general, under social law, men develope right action; but some hidden spring seems to force them continually into wrong action. We have our hand upon this hidden spring in the sexuo-economic relation. If we had remained on an individual economic basis, the evil influence would have had far less ill effect; but, as we grow into the social economic relation, it increases with our civilization. The sex-relation is primarily and finally individual. It is a physical relation between individual bodies; and, while it may also extend to a psychical relation between individual souls, it does not become a social relation, though it does change its personal development to suit social needs. In all its processes, to all its results, the sex-relation is personal, working through individuals upon individuals, and developing individual traits and characteristics, to the great advantage of society. The qualities developed by social relation are built into the race through the sex-relation, but the sex-relation itself is wholly personal. Our economic relation, on the contrary, though originally individual, becomes through social evolution increasingly collective. By combining the human sex-relation with the human economic relation, we have combined a permanently individual process with a progressively collective one. This involves a strain on both, which increases in direct proportion to our socialization, and, so far, has resulted in the ultimate destruction of the social organism acted upon by such irreconcilable forces.