Free will appears unfettered, deliberate; it is boundlessly free, wandering, the spirit. But fate is a necessity; unless we believe that world history is a dream-error, the unspeakable sorrows of mankind fantasies, and that we ourselves are but the toys of our fantasies. Fate is the boundless force of opposition against free will. Free will without fate is just as unthinkable as spirit without reality, good without evil. Only antithesis creates the quality.
My formula for greatness in a human being is amor fati: that one wants nothing to be other than it is, not in the future, not in the past, not in all eternity.
So far there has been no philosopher in whose hands philosophy has not grown into an apology for knowledge; on this point, at least, every one is an optimist, that the greatest usefulness must be ascribed to knowledge. They are all tyrannized over by logic, and this is optimism in its essence.
Morality is neither rational nor absolute nor natural. World has known many moral systems, each of which advances claims universality; all moral systems are therefore particular, serving a specific purpose for their propagators or creators, and enforcing a certain regime that disciplines human beings for social life by narrowing our perspectives and limiting our horizons.
I fly in dreams, I know it is my privilege, I do not recall a single situation in dreams when I was unable to fly. To execute every sort of curve and angle with a light impulse, a flying mathematics - that is so distinct a happiness that it has permanently suffused my basic sense of happiness.