This case illustrates, I believe, what remarkable masks the outbreak of the homosexual trait is capable of assuming. Similar masks are the fear of syphilis, the fear of “blood poisoning,” and the dread of physical contact with other persons or objects. The fear of syphilis covers also other dreads. Formerly I thought that syphilidophobia was only a mask for incest craving. I am now convinced that it stands for “forbidden love” generally. Syphilis stands as a symbol either for incest or for homosexuality. ‘Becoming infected’ means: ‘being oppressed’ by homosexual or incestuous tendencies. These figures of speech are suggested by the every day use of language. One hears, for instance, that the whole city of Berlin is infected with homosexuality; the opponents of homosexuality fight against the plague which threatens the whole German nation; young men are warned against being infected with homosexuality. It is not surprising, therefore, that the morbid expressions of neuroses assume similar figurative forms. The rise of such morbid fear during advanced age is always suspicious of an outbreak of homosexuality, against which various protective devices are thus raised. If I should attempt to describe all these forms of outbreak and all the protective devices I would have to write a special treatise on anxiety states. We well know already that all neuroses have a bisexual basis. But, what is more, I maintain that homosexuality plays a far greater role in the development of neurotic traits than any other suppressed instincts. I am now turning my attention to a character in whom homosexuality would hardly be suspected as a motive power. I refer to the Don Juan type of personality. The Messalina type I shall describe in connection with my study of sexual anesthesia in woman. But the Don Juan character deserves special attention in this connection. One would think that a man who devotes his whole life to women, who dreams day and night only of new conquests, who considers every woman worth while when opportunity favors him, a man for whom no woman is too old, or too ugly, if he desires her,—that such a man would be far removed from any homosexual trend. Yet the contrary is the fact and the greater my opportunity to study the ‘woman chaser’ the stronger my conviction becomes that, back of the ceaseless hunt, stands the longing after the male. Though many explanations have been offered for the Don Juan type,—that prototype of Faust’s—none has solved satisfactorily the riddle of his psyche. Only the recognition of latent homosexuality promises to clear for us the meaning of this character. What are the typical character traits attributed to the Don Juan type? His easily stirred passion; secondly, his indiscriminate taste; thirdly, his sudden cooling off. Of course, there are any number of transitional forms and mixed stages.