Men who have seen life and death... as an unbroken continuum, the swinging pendulum, have been able to move as freely into death as they walked through life. Socrates went to the grave almost perplexed by his companions' tears.

The true character of liberty is independence, maintained by force.

Fools have a habit of believing that everything written by a famous author is admirable. For my part I read only to please myself and like only what suits my taste.

Superstition sets the whole world in flames, but philosophy douses them.

But nothing is more estimable than a physician who, having studied nature from his youth, knows the properties of the human body, the diseases which assail it, the remedies which will benefit it, exercises his art with caution, and pays equal attention to the rich and the poor.

What is madness? To have erroneous perceptions and to reason correctly from them.

If there’s life on other planets, then the earth is the Universe’s insane asylum.