In connection with this case I may make a few remarks about the so-called climacterium of man and about woman’s critical period. The psychic process is well known, in so far as it involves a parting from one’s youth, and it has been repeatedly outlined and described. The whole love instinct of man rebels against growing old and fosters the utilization to the utmost of the opportunities during the few remaining years. The milder the sexual life in the past, the greater and more stormy becomes the need of making up for lost opportunities “while there is time.” But the significance of homosexuality during this critical period is a matter which most investigators have overlooked. It may be that the involution of the sexual glands brings the opposite sex into stronger relief at this period. One who conceives bisexuality as a chemical process—and there are some data apparently supporting such a view—may speak of the conquest of man’s heterosexuality over homosexuality. _Hirschfeld_ would say of a man: as he now produces less andrin the gynecin achieves upper hands. Perhaps many cases of so-called late homosexuality (_Krafft-Ebing_) may be explained in this manner. I have known a man who, up to the 50th year of his life, has had no sexual experiences and who was also unaware of his homosexuality. At that age he happened to drift into the company of homosexuals and now he is a confirmed member of the third (intermediate) sex. Possibly the outbreak of homosexuality leading all the way to paranoia—a subject which I shall take up more fully in another chapter—depends on changes in the sexual glands, these changes leading to characteristic psychic expression. In the last case disappointment after marriage (both women proved unfaithful to the man) induced the breaking forth of the homosexual tendencies. The behavior of those persons who do not care to acknowledge their homosexuality is characteristic. So passionately do they fall in love, their impulsion to loving is so tremendous that every new passion surpasses all previous experiences. This peculiarity gives us an insight into the mentality of the Don Juan type, the desolute adventurer, and the Messalina type....