Before we make use of our knowledge of perversions to concentrate anew and with clearer perspective on the study of infantile sexuality, I must call your attention to an important difference between the two. Perverse sexuality is as a rule extraordinarily centralized, its whole action is directed toward one, usually an isolated, goal. A partial instinct has the upper hand. It is either the only one that can be demonstrated or it has subjected the others to its purposes. In this respect there is no difference between normal and perverse sexuality other than that the ruling partial instincts, and with them the sexual goals, are different. In the one case as well as in the other there is, so to say, a well organized tyranny, excepting that here one family and there another has appropriated all the power to itself. Infantile sexuality, on the other hand, is on the whole devoid of such centralization and organization, its individual component impulses are of equal power, and each independently goes in search of the acquisition of pleasurable excitement. The lack as well as the presence of centralization fit in well with the fact that both the perverse and the normal sexuality originated from the infantile. There are also cases of perverse sexuality that have much more similarity with the infantile, where, independently of one another, numerous partial instincts have forced their way, insisted on their aims, or rather perpetuated them. In these cases it is more correct to speak of infantilism of sexual life than of perversions.