Many of us will also find it hard to abandon our belief that in man himself there dwells an impulse towards perfection, which has brought him to his present heights of intellectual prowess and ethical sublimation, and from which it might be expected that his development into superman will be ensured. But I do not believe in the existence of such an inner impulse, and I see no way of preserving this pleasing illusion. The development of man up to now does not seem to me to need any explanation differing from that of animal development, and the restless striving towards further perfection which may be observed in a minority of human beings is easily explicable as the result of that repression of instinct upon which what is most valuable in human culture is built. The repressed instinct never ceases to strive after its complete satisfaction which would consist in the repetition of a primary experience of satisfaction: all substitution- or reaction-formations and sublimations avail nothing towards relaxing the continual tension; and out of the excess of the satisfaction demanded over that found is born the driving momentum which allows of no abiding in any situation presented to it, but in the poet’s words ‘urges ever forward, ever unsubdued’ (Mephisto in ‘Faust’, Act 1. Faust’s study.). The path in the other direction, back to complete satisfaction, is as a rule barred by the resistances that maintain the repressions, and thus there remains nothing for it but to proceed in the other, still unobstructed direction, that of development, without, however, any prospect of being able to bring the process to a conclusion or to attain the goal. What occurs in the development of a neurotic phobia, which is really nothing but an attempt at flight from the satisfaction of an instinct, gives us the prototype for the origin of this ostensible ‘impulse towards perfection’ which, however, we cannot possibly ascribe to all human beings. The dynamic conditions are, it is true, quite generally present, but the economic relations seem only in rare cases to favour the phenomenon. VI