The mathematical education of the young physicist [Albert Einstein] was not very solid, which I am in a good position to evaluate since he obtained it from me in Zurich some time ago.

Integers are the fountainhead of all mathematics.

Henceforth space by itself, and time by itself, are doomed to fade away into mere shadows, and only a kind of union of the two will preserve an independent reality.

Oh, that Einstein, always skipping lectures... I certainly never would have thought he could do it.

Heaven is angered by my arrogance; my proof [of the four-color theorem] is also defective.

The true cost of following your dreams isn't what you sacrifice when you chase them, it's what you lose when you don't

Sometimes legends make reality, and become more useful than the facts.

There live Christ and Nero in our hearts.

All friendly feelings toward others come from the friendly feelings a person has for himself.

I don't like telling really talented people who are amazing what they should do. I'm just going to let them be. It has to be complete freedom - creativity has to be complete freedom.

i have never pondered over questions that are not questions.

If I couldn't laugh, I just would go insane. If we couldn't laugh, we just would go insane. If we weren't all crazy, we would go insane.

I consider myself to be a pretty good judge of people... that's why I don't like any of them.

The goal should be to build a sustainable lifestyle business that does good for employees and customers - and that steadily builds wealth.

Only ambitious nonentities and hearty mediocrities exhibit their rough drafts. It's like passing around samples of sputum.