Whatever your problems in math are, I assure mine are greater.

I am content in my later years. I have kept my good humor and take neither myself nor the next person seriously.

Creativity is seeing what others see and thinking what no one else has ever thought.

Thinking is to man what flying is to birds. Don’t follow the example of a chicken when you could be a lark.

I do not believe in free will. Schopenhauer's words: 'Man can do what he wants, but he cannot will what he wills,' accompany me in all situations throughout my life and reconcile me with the actions of others, even if they are rather painful to me. This awareness of the lack of free will keeps me from taking myself and my fellow men too seriously as acting and deciding individuals, and from losing my temper.

Every day, man is making bigger and better fool-proof things, and every day, nature is making bigger and better fools. So far, I think nature is winning.

A person starts to live when he can live outside himself.