All mankind is divided, as it was at all times and is still, into slaves and freemen.

The trodden worm curls up. This testifies to its caution. It thus reduces its chances of being trodden upon again. In the language of morality: Humility.

Whatever a theologian regards as true must be false: there you have almost a criterion of truth.

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.

Your only problem, perhaps, is that you scream without letting yourself cry.

How far is truth susceptible of embodiment? That is the question, that is the experiment.

Annoyance is a physical malady that is in no way cured just because the annoying situation that causes it is eliminated.