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Rh establish for all subsequent psychiceffortspsychic efforts [sic] a compulsion to which they have to submit and which they must strive if possible to divert from its course and direct to higher aims. In consequence of this retardation of the foreconscious occupation a large sphere of the memory material remains inaccessible.

Among these indestructible and unincumbered wish feelings originating from the infantile life, there are also some, the fulfilments of which have entered into a relation of contradiction to the end-presentation of the secondary thinking. The fulfilment of these wishes would no longer produce an affect of pleasure but one of pain; and it is just this transformation of affect that constitutes the nature of what we designate as "repression" in which we recognise the infantile first step of passing adverse sentence or of rejecting through reason. To investigate in what way and through what motive forces such a transformation can be produced constitutes the problem of repression, which we need here only skim over. It will suffice to remark that such a transformation of affect occurs in the course of development (one may think of the appearance in infantile life of disgust which was originally absent), and that it is connected with the activity of the secondary system. The memories from which the unconscious wish brings about the emotional discharge have never been accessible to the Forec., and for that reason their emotional discharge cannot be inhibited. It is just on account of this affective development that these ideas are not even now accessible to the foreconscious thoughts to which they have transferred their wishing power. On the contrary, the principle of pain comes into play, and causes the Forec. to deviate from these thoughts of transference. The latter, left to themselves, are "repressed," and thus the existence of a store of infantile memories, from the very beginning withdrawn from the Forec, becomes the preliminary condition of repression.

In the most favourable case the development of pain terminates as soon as the energy has been withdrawn from the thoughts of transference in the Forec., and this effect characterises the intervention of the principle of pain as expedient. It is different, however, if the repressed unconscious wish receives an organic enforcement which it can lend to its thoughts of transference and through which it can enable them to make