In conclusion I may point out another very significant mask of homosexuality. I refer to psychic impotence, which shows itself particularly during attempted intercourse with respectable women. Men potent with prostitutes but unable to carry out coitus with a ‘decent’ woman, are latent homosexuals whose libido is sufficiently roused in the presence of the prostitute by the realisation that the woman has been used before by another man. Of course, a relative impotence of this character has many other determinants. But the factor here mentioned is never absent. The study of this cryptic form of homosexuality alone will enable us to appreciate the inestimable role of bisexuality in the mental life of modern man. Other forms of masked homosexuality, manifested in phobias and compulsion, I must mention only superficially. There are men who become extremely uneasy if some other man walks directly behind them, men who are unable to remain with another man alone in a room, men who always dream of scenes in which some man points a revolver or knife at them, or who have the uncomfortable feeling that some hard substance, perhaps nothing more than an indurated cylindrical mass of fæces, is pressing within their rectum. With these peculiarities such men betray their homosexuality, just as the paranoiacs do with their delusions of persecution. Women show similar phobias and more especially morbid anxieties often centering around servant girls. Women who change servant girls continually, who worry themselves over the servant problem or quarrel with the girls, or feel impelled to touch them (acts which really take the place of sexual deeds) are frequently homosexual. Similarly, various forms of fetichism may be a cover for homosexuality. It is plainly obvious that the study of sexual masks promises to further immensely our knowledge about matters of sex. At the same time it is clear that the opposition of many circles to the new studies must remain a tremendous one. Possibly a great deal of the opposition to the new psychology has its roots in this very peculiarity of human nature. Their basic bisexual predisposition is precisely what men are least disposed to recognise. These general statements I now propose to prove on the basis of various observations from my practice illustrating the great role played by the homosexual components in the love life of average men and women. This will show clearly why I never use such terms as “contrary,” or “inverted” sexual feeling, and why I never speak of “inversion,” or of “perversion,” when I discuss homosexuality. The very purpose of this work is to bring out the homosexual components in the life of every person and to bring out the normal feature of that state. For normal is everything that is natural; _and from the standpoint of nature we are never monosexual and always bisexual_.