Today we shall look at another angle of the development, namely the relation of the partial instinct to the object. We shall make a hurried survey of this development in order to spend more time upon a relatively later product. Some of the components of the sex instincts have had an object from the very beginning and hold fast to it; such are the instinct to mastery (sadism), curiosity, and the impulse to watch. Other impulses which are more clearly attached to specific erogenous zones of the body have this object only in the beginning, as long as they adhere to the functions which are not sexual; they release this object when they free themselves from these non-sexual functions. The first object of the oral component of the sexual impulse is the mother's breast, which satisfies the hunger of the infant. By the act of sucking, the erotic component which is also satisfied by the sucking becoming independent, it gives up the foreign object and replaces it by some part of its own body. The oral impulse becomes _auto-erotic_, just as the anal and other erogenous impulses are from the very beginning. Further development, to express it most briefly, has two goals--first, to give up auto-eroticism, and, again, to substitute for the object of one's own body a foreign object; second, to unify the different objects into a single impulse, replace them by a single object. To be sure, that can happen only if this single object is itself complete, a body similar to one's own. Nor can it be consummated without leaving behind as useless a large number of the auto-erotic instinctive impulses. The processes of finding the object are rather involved, and have as yet had no comprehensive exposition. For our purpose, let us emphasize the fact that when the process has come to a temporary cessation in the childhood years, before the latent period, the object it has found is seen to be practically identical with the first object derived from its relation to the object of the oral pleasure impulse. It is, if not the mother's breast, the mother herself. We call the mother the first _object of love_. For we speak of love when we emphasize the psychic side of sex-impulses, and disregard or for a moment wish to forget the fundamental physical or "sensual" demands of the instincts. At the time when the mother becomes the object of love, the psychic work of suppression which withdraws the knowledge of a part of his sexual goal from his consciousness has already begun in the child. The selection of the mother as the object of love involves everything we understand by the Oedipus complex which has come to have such great significance in the psychoanalytic explanation of neuroses, and which has had no small part in arousing opposition to psychoanalysis.