What, in a word, are we to say of such cases as these? There is here a real opposition, as it would appear, between the interests of the present and the interests of the future. But the answer is that, just because, and just in so far as, human beings are provident and responsible and worthy of the name of human beings, the opposition can be practically solved. Not for anything must we betray the cause of the unborn, but marriage does not necessarily involve parenthood, and the right course--the profoundly right and deeply moral course--in such cases as these, is marriage without parenthood. On every hand in the civilized world we now see childless marriages, the number of which incessantly increases; they are an ominous symptom of excessive luxury and other factors of decadence, if history is to be trusted. But it is not permissible for us, without special knowledge, to condemn individuals, whatever we may think of the phenomenon as a whole. Yet convention and prejudice are curious things, and people who are themselves married and deliberately childless, others of both sexes who are unmarried, people who have never raised their voices against themselves or their friends who, though married, are childless, because they have little courage or because they permit compliance with fashion's demands to stifle the best parts of their nature--such people, I say, will actually be found to protest, with the sort of canting righteousness which does its best to smirch the Right, against this doctrine, _Marry, but do not have children_, as the rule of life in the cases under discussion. Nevertheless, this is the moral doctrine; this is the right fruit of knowledge, and knowledge will more and more be applied to this high end, the service alike of the present and the future. We must not allow our minds to be bullied out of just reasoning because the possibility of marriage without parenthood is often abused. All forms of knowledge, like all other forms of power, may be used or may be abused. Knowledge has no moral sign attached to it, but neither has it any immoral sign attached to it. The power to control parenthood is neither good nor evil, but like any other power may serve either good or evil. Dynamite may cause an explosion which buries a hundred men in a living grave, or it may blast the rock which buries them and set them free. The man of science is false to his creed and his cause if he declares that there is any order of knowledge or any kind of power which were better unknown or unavailable. For many years past we have been told that the power to control parenthood is wicked, flying in the face of providence, interfering with the order of Nature--as if every act worthy of the human name were not an interference with the order of Nature, as Nature is conceived by fools; and even to-day the churches, violently differing from each other in the region of incomprehensibles, are at least agreed in anathematizing the knowledge and the power to