I can give you only this very condensed and incomplete abstract of Mr. John Fiske's argument; you must read it for yourself in his "Destiny of Man." And as he has there shown, this can have but one result, and that is the family life of man. And we may yet very possibly have to acknowledge that family life of a very low grade is just as truly characteristic of the higher apes as of lower man. And thus the family life of man is the physiological result of, and rooted in, mammalian structure.
And the benefits of family life are too great and numerous to even enumerate. First of all the family is the school of unselfishness. All the love of the parent is drawn out for the helpless and dependent child, and grows as the parent works and thinks for it. And the child returns a fraction of his parents' love. Within the close bond of the family the struggle for place and opportunity is replaced by mutual helpfulness; and this doing and burden-bearing with and for each other is a constant exercise in the practice of love. And with out this mutual love and helpfulness the family cannot exist.
And slowly man begins to apply the lessons learned in the family to other relations with partners, neighbors, and friends. Slowly he discovers that an entirely selfish life defeats its own ends. A voice within him tells him continually that love is better than selfishness and ministering better than being ministered unto. It dawns upon him that it is against the nature of things that other people should be so selfish and grasping; a few begin to apply the moral to themselves, and a few of these to act accordingly.
And what a change the few steps which man has taken in this direction have wrought in his life. Says Professor Huxley: "In place of ruthless self-assertion it demands self-restraint, in place of thrusting aside or treading down all competitors, it requires that the individual shall not merely respect, but shall help his fellows; its influence is directed not so much to the survival of the fittest as to the fitting of as many as possible to survive. It repudiates the gladiatoral theory of existence."
It is a vast change from the "gladiatorial theory" to that of "mutual helpfulness." Call it a revolution, if you will. Revolutions are not unheard of in the history of the animal kingdom any more than in human history. We have seen, first, digestion and reproduction on the throne of animal organization, then muscle, and finally brain. Each of these changes is in one sense a revolution.