To-day we will follow up another aspect of this development—namely, the relation of the sexual component-impulses to an _object_; or, rather, we will take a fleeting glimpse over this development so that we may spend more time upon a comparatively late result of it. Certain of the component-impulses of the sexual instinct have an object from the very beginning and hold fast to it: such are the impulse to mastery (sadism), to gazing (skoptophilia) and curiosity. Others, more plainly connected with particular erotogenic areas in the body, only have an object in the beginning, so long as they are still dependent upon the non-sexual functions, and give it up when they become detached from these latter. Thus the first object of the oral component of the sexual instinct is the mother’s breast which satisfies the infant’s need for nutrition. In the act of sucking for its own sake (_lutschen_) the erotic component, also gratified in sucking for nutrition (_saugen_), makes itself independent, gives up the object in an external person, and replaces it by a part of the child’s own person. The oral impulse becomes _auto-erotic_, as the anal and other erotogenic impulses are from the beginning. Further development has, to put it as concisely as possible, two aims: first, to renounce auto-erotism, to give up again the object found in the child’s own body in exchange again for an external one; and secondly, to combine the various objects of the separate impulses and replace them by one single one. This naturally can only be done if the single object is again itself complete, with a body like that of the subject; nor can it be accomplished without some part of the auto-erotic impulse-excitations being abandoned as useless. The processes by which an object is found are rather involved, and have not so far received comprehensive exposition. For our purposes it may be emphasized that, when the process has reached a certain point in the years of childhood before the latency period, the object adopted proves almost identical with the first object of the oral pleasure impulse, adopted by reason of the child’s dependent relationship to it; it is, namely, the mother, although not the mother’s breast. We call the mother the first _love_-object. We speak of ‘love’ when we lay the accent upon the mental side of the sexual impulses and disregard, or wish to forget for a moment, the demands of the fundamental physical or ‘sensual’ side of the impulses. At about the time when the mother becomes the love-object, the mental operation of repression has already begun in the child and has withdrawn from him the knowledge of some part of his sexual aims. Now with this choice of the mother as love-object is connected all that which, under the name of ‘_the Oedipus complex_,’ has become of such great importance in the psycho-analytic explanation of the neuroses, and which has had a perhaps equally important share in causing the opposition against psycho-analysis.