As a result, nature is something entirely different from what comes to mind when we invoke its name.

Of all evil I deem you capable: Therefore I want good from you. Verily, I have often laughed at the weaklings who thought themselves good because they had no claws.

The perfect woman is a higher type of humanity than the perfect man, and also something much rarer. The natural history of animals furnishes grounds in support of this theory.

Our greatest experiences are our quietest moments.

Our knowledge will take its revenge on us, just as ignorance exacted its revenge during the Middle Ages.

What is originality? To see something that has no name as yet and hence cannot be mentioned although it stares us all in the face. The way men usually are, it takes a name to make something visible for them.

Invisible threads are the strongest ties.