"I have no faith, however, in the existence any such internal instinct [towards perfection] and I cannot see how this benevolent illusion is to be preserved. The present development of human beings requires, as it seems to me, no different explanation from that of animals: What appears in a minority of human individuals as an untiring impulsion towards further perfection can easily be understood as a result of the instinctual repression upon which is based all that is most precious in human civilization." (Freud. Beyond the Pleasure Principle.)
