"I never put off till tomorrow what I can possibly do—the day after."

"The advantage of the emotions is that they lead us astray, and the advantage of science is that it is not emotional."

"The well-bred contradict other people. The wise contradict themselves."

"The only way to behave to a woman is to make love to her if she is pretty, and to some one else if she is plain."

"To live is the rarest thing in the world. Most people exist, that is all."