Everything that exists in your life, does so because of two things: something you did or something you didn't do.

You teach me baseball and I'll teach you relativity...No we must not. You will learn about relativity faster than I learn baseball.

He who finds though that lets us penetrate even a little deeper into the eternal mystery of nature has been granted great grace. He who, in addition, experiences the recognition, sympathy, and help of the best minds of his times, had been given almost more happiness than one man can bear.

Capitalism creates a huge community of producers who are unceasingly striving to deprive each other of the fruits of their collective labor, and an oligarchy that cannot be effectively checked even by a democratically organized society....the subjugation is not by force but because the privileged class has long ago established a system of values by which the people were thenceforth, to a large extent unconsciously, guided in their social behavior.

If you want different results, do not do the same things.

It is only men who are free, who create the inventions and intellectual works which to us moderns make life worth while.

Joy and amazement of the beauty and grandeur of this world of which man can just form a faint notion.