This tendency is exhibited empirically by the rising revolt against those fetters which the family idea has imposed upon humanity: by the growing feeling that divorce should be a matter of individual expedience; by the successful war of cosmopolitanism upon insularity and clannishness and upon all other costly outgrowths of the old idea that because men are of the same blood they must necessarily love one another; and by the increasing reluctance among civilized human beings to become parents without some reason more logical than the notion that parenthood, in itself, is praiseworthy. It seems plain, in a word, that so soon as any considerable portion of the women of the world become capable of doing men's work and of thus earning a living for themselves and their children without the aid of men, there will be in full progress a dangerous, if unconscious, war upon the institution of marriage. It may be urged in reply that this will never happen, because of the fact that women are physically unequal to men, and that in consequence of their duty of child-bearing, they will ever remain so, but it may be answered to this that use will probably vastly increase their physical fitness; that science will rob child-bearing of most of its terrors within a comparatively few years; and that the woman who seeks to go it alone will have only herself and her child to maintain, whereas, the man of today has not only himself and his child, but also the woman. Again, it is plain that the economic handicap of child-bearing is greatly overestimated. At most, the business of maternity makes a woman utterly helpless for no longer than three months, and in the case of a woman who has three children, this means nine months in a life time. It is entirely probable that alcohol alone, not to speak of other enemies of efficiency, robs the average man of quite that much productive activity during his three score years and ten. [1] "_Also sprach Zarathustra_," III. [2] Nietzsche saw, of course ("The Genealogy of Morals," III), that temporary celibacy was frequently necessary to men with peculiarly difficult and vitiating tasks ahead of them. The philosopher who sought to solve world riddles, he said, had need to steer clear of women, for reasons which appealed, with equal force, to the athlete who sought to perform great feats of physical strength. It is obvious, however, that this desire to escape distraction and drain differs vastly from ethical celibacy. [3] "_Morgenröte_," § 346. [4] "_Menschliches allzu Menschliches_," § 431, 434. [5] All of these quotations are from "_Morgenröte_." [6] Elsie Clews Parsons: "The Family," New York, 1906. Mrs. Parsons is a doctor of philosophy, a Hartley house fellow and was for six years a lecturer on sociology at Barnard College. [7] "_Also sprach Zarathustra_," III. [8] "_Also sprach Zarathustra_," I. [9] "_Also sprach Zarathustra_," I.