If one uses one's intellect to become master over the unlimited emotions, it may produce a sorry and diversionary effect upon the intellect.

What if God were not exactly truth, and if this could be proved? And if he were instead the vanity, the desire for power, the ambitions, the fear, and the enraptured and terrified folly of mankind?

I teach the No to all that makes weak--that exhausts. I teach the Yes to all that strengthens, that stores up strength, that pride.

I know my fate. One day my name will be tied to the memory of something monstrous - a crisis without equal on earth.... I am no man, I am dynamite!

Willing sets you free: that is the true doctrine of will and freedom--thus Zarathustra instructs you.

You say a good cause justifies any war; but I say a good war justifies any cause.

There is not enough love and goodness in the world to permit giving any of it away to imaginary beings.