Friedrich Nietzsche

Human. All Too Human

On The History Of Moral Feelings

4 1 The unchangeable character. In the strict sense, it is not true that one’s character is unchangeable; rather, this popular tenet means only that during a man’s short lifetime the motives affecting him cannot normally cut deeply enough to destroy the imprinted writing of many millennia. If a man eighty thousand years old were conceivable, his character would in fact be absolutely variable, so that out of him little by little an abundance of different individuals would develop. The brevity of human life misleads us to many an erroneous assertion about the qualities of man.

59 Intellect and morality. One must have a good memory to be able to keep the promises one has given. One must have strong powers of imagination to be able to have pity. So closely is morality bound to the quality of the intellect.

82 The skin of the soul. Just as the bones, flesh, intestines, and blood vessels are enclosed by skin, which makes the sight of a man bearable, so the stirrings and passions of the soul are covered up by vanity: it is the skin of the soul.