“Doubt is an uncomfortable condition, but certainty is a ridiculous one.”

“Uncertainty is an uncomfortable position. But certainty is an absurd one.”

“Such then is the human condition, that to wish greatness for one's country is to wish harm to one's neighbors.”

“I have never made but one prayer to God, a very short one: Oh Lord, make my enemies ridiculous. And God granted it."(Letter to Étienne Noël Damilaville, May 16, 1767)”

“So it is the human condition that to wish for the greatness of one's fatherland is to wish evil to one's neighbors. The citizen of the universe would be the man who wishes his country never to be either greater or smaller, richer or poorer.”

“I have wanted to kill myself a hundred times, but somehow I am still in love with life. This ridiculous weakness is perhaps one of our more stupid melancholy propensities, for is there anything more stupid than to be eager to go on carrying a burden which one would gladly throw away, to loathe one’s very being and yet to hold it fast, to fondle the snake that devours us until it has eaten our hearts away?”

“If one doesn't get what one wants in one world, one can always get it in another”