You are probably acquainted with the fact that the neurosis of hysteria may manifest its symptoms in all organic systems and may therefore disturb all functions. Analysis shows that in these symptoms there are expressed all those tendencies termed perverse, which seek to represent the genitals through other organs. These organs behave as substitute genitals; through the study of hysteric symptoms we have come to the conclusion that aside from their functional activities, the organs of the body have a sexual significance, and that the performance of their functions is disturbed if the sexual factor claims too much attention. Countless sensations and innervations, which appear as symptoms of hysteria, in organs apparently not concerned with sexuality, are thus discovered as bound up with the fulfillment of perverse sexual desires through the transference of sex instincts to other organs. These symptoms bring home to us the extent to which the organs used in the consumption of food and in excretion may become the bearers of sexual excitement. We see repeated here the same picture which the perversions have openly and unmistakably lain before us; in hysteria, however, we must make the detour of interpreting symptoms, and in this case the perverse sexual tendencies must be ascribed not to the conscious but to the unconscious life of the individual. Among the many symptoms manifested in compulsion neurosis, the most important are those produced by too powerful sadistic tendencies, i.e., sexual tendencies with perverted aim. These symptoms, in accordance with the structure of compulsion neurosis, serve primarily as a rejection of these desires, or they express a struggle between satisfaction and rejection. In this struggle, the satisfaction is never excessively curtailed; it achieves its results in the patient's behavior in a roundabout way, by preference turning against his own person in self-inflicted torture. Other forms of neurosis, characterized by intensive worry, are the expression of an exaggerated sexualization of acts that are ordinarily only preparatory to sexual satisfactions; such are the desires to see, to touch, to investigate. Here is thus explained the great importance of the fear of contact and also of the compulsion to wash. An unbelievably large portion of compulsion acts may, in the form of disguised repetitions and modifications, be traced back to onanism, admittedly the only uniform action which accompanies the most varied flights of the sexual imagination.