I don't have any romanticism about any part of my past. I think of it only since it gave me pleasure or helped me grow psychologically. That is the only thing that interests me about yesterday. I don't believe in yesterday, by the way. You know I don't believe in yesterday. I am only interested in what I am doing now.

Paper is to write things down that we need to remember. Our brains are used to think.

Have more than you show, Speak less than you know.

The highest wisdom has but one science - the science of the whole - the science explaining the whole creation and man's place in it.

Mysterious language is not a sign of wisdom. The wiser a person is, the simpler the language he uses to express his thoughts.

Nothing is so necessary for a young man as the company of intelligent women.