The actions carried out at these places generally take the form of rubbing, piercing, tugging, etc., accompanied by a certain rhythm, and serve to produce pleasure. After a halt of greater or less duration at these stations, the libido proceeds until it arrives at the sexual zone, where it may next provoke the first onanistic attempts. During its “march,” the libido carries over not a little from the function of nutrition into the sexual zone; this readily explains the numerous close associations between the function of nutrition and the sexual function. This “march” of the libido takes place at the time of the pre-sexual stage, which is characterized by the fact that the libido gradually relinquishes the special character of the instinct of nutrition, and by degrees acquires the character of the sexual instinct. At this stage we cannot yet speak of a true sexual libido. Therefore we are obliged to qualify the polymorphous perverse sexuality of early infancy differently. The polymorphism of the tendencies of the libido at this time is to be explained as the gradual movement of the libido away from the sphere of the function of nutrition towards the sexual function. _The Infantile “Perversity.”_—Thus rightly vanishes the term “perverse”—so strongly contested by our opponents—for it provokes a false idea. When a chemical body breaks up into its elements, these elements are the products of its disintegration, but it is not permissible on that account to describe elements as entirely products of disintegration. Perversities are disorders of fully-developed sexuality, but are never precursors of sexuality, although there is undoubtedly an analogy between the precursors and the products of disintegration. The childish rudiments, no longer to be conceived as perverse, but to be regarded as stages of development, change gradually into normal sexuality, as the normal sexuality develops. The more smoothly the libido withdraws from its provisional positions, the more completely and the more quickly does the formation of normal sexuality take place. It is proper to the conception of normal sexuality that all those early infantile inclinations which are not yet sexual should be given up. The less this is the case, the more is sexuality threatened with perverse development. The expression “perverse” is here used in its right place. The fundamental condition of a perversity is an infantile, imperfectly developed state of sexuality. Footnote 5: No. 7 of this Monograph Series. Footnote 6: No. 3 of this Monograph Series. CHAPTER IV The Etiological Significance of the Infantile Sexuality