What is bad? -Everything that arises from weakness.

Whoever thought that he had understood something of me had merely construed something out of me, after his own image.

Ah, there are so many things betwixt heaven and earth of which only the poets have dreamed!

Strength is the morality of the man who stands out from the rest, and it is mine.

I love the great despisers because they are the great adorers.

Conversation with a friend will only bear good fruit of knowledge when both think only of the matter under consideration and forget that they are friends.

The moral earth, too, is round! The moral earth, too, has its antipodes! The antipodes, too, have their right to exist! There is still another world to be discovered--and more than one! Set sail, you philosophers!