held the bond between man and woman so sacred, and the effect of it on the children so incalculable, that they have always admired the maintenance of honour more than the maintenance of safety. Doubtless they thought that even the children might be none the worse for not being the children of cowards and shirkers; but this was not the first thought, the first commandment. Briefly, we may say that while many moral systems have set restraints on sex almost as severe as any Eugenist could set, they have almost always had the character of securing the fidelity of the two sexes to each other, and leaving the rest to God. To introduce an ethic which makes that fidelity or infidelity vary with some calculation about heredity is that rarest of all things, a revolution that has not happened before.
It is only right to say here, though the matter should only be touched on, that many Eugenists would contradict this, in so far as to claim that there was a consciously Eugenic reason for the horror of those unions which begin with the celebrated denial to man of the privilege of marrying his grandmother. Dr. S. R. Steinmetz, with that creepy simplicity of mind with which the Eugenists chill the blood, remarks that "we do not yet know quite certainly" what were "the motives for the horror of" that horrible thing which is the agony of Œdipus. With entirely amiable intention, I ask Dr. S. R. Steinmetz to speak for himself. I know the motives for regarding a mother or sister as separate from other women; nor have I reached
