The magnitude of a progress is gauged by the greatness of the sacrifice that it requires.

As long as you still experience the stars as something "above you", you lack the eye of knowledge.

A soul which knows that it is loved, but does not itself love, betrays its sediment: its dregs come up.

What is evil?-Whatever springs from weakness.

When there is a choice about it, a great sacrifice is preferable to a small sacrifice, because we compensate ourselves for a greatone with self-admiration, which is not possible with a small one.

Deception, flattering, lying, deluding, talking behind the back, putting up a false front, living in borrowed splendor, wearing a mask, hiding behind convention, playing a role for others and for oneself -- in short, a continuous fluttering around the solitary flame of vanity -- is so much the rule and the law among men that there is almost nothing which is less comprehensible than how an honest and pure drive for truth could have arisen among them.

All I need is a sheet of paper and something to write with, and then I can turn the world upside down.