The desire for a strong faith is not the proof of a strong faith, rather the opposite. If one has it one may permit oneself the beautiful luxury of skepticism: one is secure enough, fixed enough for it.

To use the same words is not a sufficient guarantee of understanding; one must use the same words for the same genus of inward experience; ultimately one must have one's experiences in common.

In music the passions enjoy themselves.

The refinement of morality increases together with the refinement of fear. Today the fear of disagreeable feelings in other people is almost the strongest of our own disagreeable feelings.

Those people have no real interest in a science who only begin to get excited about it when they themselves have made discoveries in it.

This demand follows from an insight that I was the first to articulate: that there are no moral facts.

I have learned to walk: since then I have run. I have learned to fly: since then I do not have to be pushed in order to move. Now I am nimble, now I fly, now I see myself under myself, now a god dances within me.