Summary

Portrait of Sigmund Freud Sigmund Freud Three Contributions to the Theory of Sex (1905)

DEVIATION IN REFERENCE TO THE SEXUAL OBJECT The popular theory of the sexual impulse corresponds closely to the poetic fable of dividing the person into two halves—man and woman—who strive to become reunited through love. It is therefore very surprising to hear that there are men for whom the sexual object is not woman but man, and that there are women for whom it is not man but woman. Such persons are called contrary sexuals, or better, inverts; the condition, that of inversion. The number of such individuals is considerable though difficult of accurate determination.
Source: Wikisource

Portrait of Sigmund Freud Sigmund Freud Three Contributions to the Theory of Sex

I believe that the infantile amnesia which causes the individual to look upon his childhood as if it were a prehistoric time and conceals from him the beginning of his own sexual life—that this amnesia is responsible for the fact that one does not usually attribute any value to the infantile period in the development of the sexual life. One single observer cannot fill the gap which has been thus produced in our knowledge.
Source: Gutenberg

Portrait of Sigmund Freud Sigmund Freud Three Contributions to the Theory of Sex (1905)

THE INFANTILE SEXUAL INVESTIGATION Inquisitiveness.—At the same time when the sexual life of the child reaches its first bloom, from the age of three to the age of five, it also evinces the beginning of that activity which is ascribed to the impulse for knowledge and investigation. The desire for knowledge can neither be added to the elementary components of the impulses nor can it be altogether subordinated under sexuality.
Source: Wikisource

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