In the following general study of a subject to which no human affair is wholly alien, it has been impossible to deal adequately with the great question of eugenic education--that is to say, education _as for parenthood_. If only to emphasise its overwhelming importance, one must here insist upon the argument. There is, I believe, no greater need for society to-day than to recognise that education must include, _must culminate in_, preparation for the supreme duty of parenthood. This involves instruction regarding those bodily functions which exist not for the body nor for the present at all, but for the future life of mankind. The exercise of these functions depends upon an instinct which I have for some time been in the habit of terming the _racial instinct_--a name which at once suggests to us that we are to represent this instinct, to the boy or girl at puberty, not as something the satisfaction of which is an end in itself--that is the false and degrading assertion which will be made by the teachers whom youth will certainly find, if we fail in our duty--but as existing for what is immeasurably higher than any selfish end. Youth must be taught that it is for man the self-conscious, “made with such large discourse, looking before and after,” as Hamlet says, to deal with his instincts in terms of their purpose, as no creature but man can do. The boy and girl must learn that the racial instinct exists for the highest of ends--the continuance and ultimate elevation of the life of mankind. It is a sacred trust for the life of this world to come. We must teach our boys what it is to be really “manly”--the fine word used by the tempter of youth when he means “beast-ly.” To be manly is to be master of this instinct. And the “higher education” of our girls, as we must teach ourselves, will be lower, not higher, if it does not serve and conserve the future mother, both by teaching her how to care for and guard her body, which is the temple of life to come, and how afterwards to be a right educator of her children. The leading idea upon which one would insist is that the key to any of the right and useful methods of eugenic education is to be found in the conception of the racial instinct as existing for parenthood, and to be guarded, reverenced, educated for that supreme end. It is for the reader who may be responsible for youth of either sex with this key to solve the problem on the lines best suited to his or her particular case.