C.J. Van Vliet

“Not moderation, but elimination is the ideal in regard to evolution-retarding habits. In a sanitarium for dope-addicts it may be advisable to allow patients temporarily a restricted — but at the same time gradually diminishing — use of narcotics. Similarly it may be advisable to condone that sex-addicts (that is to say: all those who have habituated themselves to sexual acts) do not suddenly break their habit, provided they will gradually overcome it. But no sane person can opine that a continuous use of drugs should be prescribed for the dope-addicted patients — not even in a so-called moderate degree. Still less that it should also be recommended for those who are free from the addiction.
As little reasonable is it to claim that quasi moderate sexual activity must continually be indulged in by those who are addicted to such acts, and that also it should be recommended for all who are not so addicted.”
― C.J. Van Vliet, The Coiled Serpent: A Philosophy Of Conservation And Transmutation Of Reproductive Energy

“Man is the first product of evolution to be capable of controlling evolutionary destiny.'" Endowed as he is with reasoning powers, he must independently decide up on his own behavior, without the compelling guidance by instinct. Supplied with mind, he is expected to cooperate consciously with nature in her further evolutionary program. Unfortunately humanity has arrantly failed to make a serious effort to promote its own further progress. Instead of using the power of the mind to understand the responsibilities which freedom from blind obedience to instinct entails, mankind has refused to listen whenever it was reminded of the requirements of the evolutionary law. It was so much easier to lend an ear to the promptings of desire, which was an unknown element up to the human stage. It must have been very soon after the acquisition of mental self-consciousness and his becoming aware of stirrings of primitive impulses, that man began to use the mind to stimulate the desires of the body. In this way he has indulged the almost negligible sexual impulse which he inherited from the animal kingdom, until it has become a desire so strong that he has difficulty to control it.
Overstimulated by this unnaturally strong desire of his own making, man has looked for arbitrary ways in which to gratify it. Although reducing actual reproduction, he has discovered ways of unreproductive sexual action. But every such act, whatever form it takes, is a misuse of sex and uses up some of the life force that should be utilized for the support and the development of higher faculties. "The record of our race progress clearly shows how our upward movement has been checked ... by that misuse.”
― C.J. van Vliet, The Coiled Serpent: A Philosophy Of Conservation And Transmutation Of Reproductive Energy