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 … - Sigmund Freud

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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.