The theory of the psychoneuroses asserts with complete certainty that only sexual wish-feelings from the infantile life experience repression (emotional transformation) during the developmental period of childhood. These are capable of returning to activity at a later period of development, and then have the faculty of being revived, either as a consequence of the sexual constitution, which is really formed from the original bisexuality, or in consequence of unfavorable influences of the sexual life; and they thus supply the motive power for all psychoneurotic symptom formations.

It is only by the introduction of these sexual forces that the gaps still demonstrable in the theory of repression can be filled. I will leave it undecided whether the postulate of the sexual and infantile may also be asserted for the