“What does reason know? Reason only knows what it has succeeded in learning...”

“What does reason know? It knows only what it has managed to learn (and it may never learn anything else; that isn't very reassuring, but why not admit it?), while human nature acts as a complete entity, with all that is in it, consciously or unconsciously; and though it may be wrong, it's nevertheless alive. ”

“For the secret of human existence lies not only in living, but in knowing what to live for.”

“And why are you so firmly, so triumphantly, convinced that only the normal and the positive--in other words, only what is conducive to welfare--is for the advantage of man? Is not reason in error as regards advantage? Does not man, perhaps, love something besides well-being? Perhaps he is just as fond of suffering? Perhaps suffering is just as great a benefit to him as well-being? Man is sometimes extraordinarily, passionately, in love with suffering, and that is a fact.”

“You see, gentlemen, reason is an excellent thing, there’s no disputing that, but reason is nothing but reason and satisfies only the rational side of man’s nature, while will is a manifestation of the whole life, that is, of the whole human life including reason and all the impulses. And although our life, in this manifestation of it, is often worthless, yet it is life and not simply extracting square roots.”

“The prince says that the world will be saved by beauty! And I maintain that the reason he has such playful ideas is that he is in love.”

“After all, it is sometimes rather enjoyable to feel insulted, is it not? For the person knows that no one has insulted him, and that he himself has thought up the insult and told lies as an ornament, has exaggerated in order to create a certain impression, has seized on a word and made a mountain out of a molehill – is well aware of this, and yet is the very first to feel insulted, feel insulted to the point of pleasure, to the point of great satisfaction, and for that very reason ends up nurturing a sense of true animosity…”