abstinence: "The reabsorption of semen by the blood ... perhaps prompts the stimulus of power, the unrest of all forces towards the overcoming of resistances ... The feeling of power has so far mounted highest in abstinent priests and hermits" (quoted by Walter Kaufman in his classic, Nietzsche: Philosopher, Psychologist, Antichrist, p. 222). Before the "sexual revolution" of the 1960s, it was commonly believed by members of the medical profession that numerous mental and physical diseases in men were caused primarily by loss of nutrients through seminal discharge, and that the deliberate conservation of this substance would lead to increased health, vitality, and intellectual prowess. This also applied to masturbation, which was also thought to lead to bedwetting and hairy palms. Some advantages in favor of sexual abstinence were also claimed by Walter Siegmeister, better known as Dr. Raymond W. Bernard, an early 20th-century American alternative health, esoteric writer, author and mystic, who formed part of the alternative reality subculture. In his essay entitled "Science discovers the physiological value of continence" (1957) he states: "[I]t is clear that there is an important internal physiological relation between the secretions of the sex glands and the central nervous system, that the loss of these secretions, voluntarily or involuntarily, exercises a detrimental effect on the nutrition and vitality of the nerves and brain, while, on the other hand, the conservation of these secretions has a vitalizing effect on the nervous system, a regenerating effect on the endocrine glands [,] and a rejuvenating effect on the organism as a whole." Historically, there has been a swing from the sexually liberal end of the Industrial Revolution to the chaste values of the early Victorian period. This was then followed by a new puritanism from the late Victorian era to the mid-1900s. This important transformation often colors discussion of sexual behavior in the later 20th century. World War I began a return to sexual freedom and indulgence, but more often than not, the appearance of conforming to the earlier moral values of abstinence before marriage was retained. With the conclusion of World War II, the societal importance of abstinence declined. The advent of the first oral contraceptive pill and widely available antibiotics suppressed many consequences of wide and free sexual behavior, while social morals were also changing. By the 1970s, abandonment of premarital chastity was no longer taboo in the majority of western societies, and the