Some day we shall surround marriage and child-bearing with every manner of safeguard and ultimately the major findings of eugenics will be embodied into law and statute. The duty of parents to a child born to them is high, but highest of all at times may be the duty of leaving children unborn. Race suicide is bad, but an unguided and unlimited philoprogenitiveness may be worse. About a decade ago, it was considered radical on the part of certain representatives of the church to announce that they would not perform a marriage ceremony for a man and woman, unless these could prove themselves to be physically untainted. Later the States acted upon this suggestion and forbade certain persons entering into the marriage relation. Some day we shall pass from what I venture to call negative and physical malgenics to positive and spiritual eugenics. The one is necessary to insure the birth of healthy and normal human animals: the latter will be adopted in the hope of making possible the birth and life of normal souls. The normal, wholesome, untainted body must go before, but it can only go before. For it is not an end to itself but means to an end, and that end the furtherance of the well-being of the immortal soul. But in reality the eugenic responsibility of parents is a negative one and, being met, the second and major responsibility remains to be met. The former involves a decision; the latter the conduct of a lifetime. Once upon a time and not so long ago, it might have been said that parents are not responsible for the heredity of which they are the transmitters. Today, with certain limitations, we charge parents with the responsibility of heredity which they bestow or inflict as well as with the further and continuous responsibility of environment. Whatever may be held with respect to the duty of parents as "hereditarians," there can be no doubt that it is the obligation of parents consciously to determine, as far as may be, the content of the home environment. I would go so far, and quite unjestingly, as to maintain that the least some parents can do for their children is through environmental influence to neutralize the heredity which they have inflicted upon them. Unhappily, it may be, we cannot choose our grandparents, but we can in some measure choose our grandchildren.