It is certainly not the least charm of a theory that it is refutable.

Yet tell me, my brothers: if a goal for humanity is still lacking, is there not still lacking--humanity itself?

A change of values - that means, a change of the creators of values. He who has to be a creator always has to destroy.

No more fiction, for now we calculate; but that we may calculate, we had to make fiction first.

Only you must have worthy foes hate, but not enemies worthy of contempt. You must be proud of your enemy.

All words are prejudices.

Does wisdom perhaps appear on the earth as a raven which is inspired by the smell of carrion?