Such being the intensity of sexual impulse, it is not to be wondered at that with both men and women sexual abstinence frequently leads to serious disorders of the nervous system, and in some cases even to insanity and suicide. Of course, not all natures manifest an equally strong sexual impulse. It can also be restrained to a great extent by education and self-control, especially by avoiding the stimulant of lewd conversation and literature, alcoholism, etc. It is held that the sexual impulse is weaker among women than among men, and that sometimes women even feel revulsion against sexual contact. But these constitute a small minority whose physiological and psychological dispositions are peculiarly constituted. We may say that the manner in which the natural desires of the sexes are expressed, both in their organic and physical development, in form and in character, marks the degree of perfection of a human being, be it man or woman. Each sex has attained its own highest development. “Among civilized human beings,” says Klenke in his essay on “Woman as a Wife,” “sexual intercourse is controlled by moral principles dictated by common sense. But nothing could ever fully subdue the instinct of race preservation, implanted by nature in both sexes. Wherever healthy male or female individuals failed to fulfill this ~duty~, it was ~not of their own free will~, though they may deceive themselves into believing it, ~but was a result of social hindrances and restrictions~. These hindrances have impeded the laws of nature, have stunted the organs, and have transformed the whole organism into an atrophied type both in appearance and in character and have caused nervous disorders that bring about abnormal, pathological conditions of body and mind. The man becomes effeminate; the woman becomes masculine in form and character, because the sexual contrast has not been realized; because such particular human being remained one-sided, failing to attain his own integration, the full height of his existence.” Dr. Elizabeth Blackwell says in her essay on “The Moral Education of the Young in Relation to Sex”: “Sexual impulse exists as an inevitable condition of life and the foundation of society. It is the greatest power in human nature.... While undeveloped it is not an object of the thoughts, but it remains nevertheless the ~central force of life~. This inevitable impulse is the natural guardian against all possibility of destruction.”[44] Practical Luther has positive advice to offer. He advises: “Let him who has no desire for chastity look about him for work and turn to matrimony; a boy at the latest when he is twenty, a girl when she is fifteen or eighteen years of age. Then they are healthy and skillful and trust to God to provide for them and their children. God gives them the children and he will provide for them.” Unfortunately our social conditions make it impossible to follow Luther’s good advice,