True science teaches, above all, to doubt and be ignorant.

At times to be silent is to lie. You will win because you have enough brute force. But you will not convince. For to convince you need to persuade. And in order to persuade you would need what you lack: Reason and Right

Science is a cemetery of dead ideas, even though life may issue from them.

Man habitually sacrifices his life to his purse, but he sacrifices his purse to his vanity.

To love with the spirit is to pity, and he who pities most loves most.

And killing time is perhaps the essence of comedy, just as the essence of tragedy is killing eternity.

We should try to be the parents of our future rather than the offspring of our past.