Failure is only postponed success as long as courage 'coaches' ambition.

Things you can get access to, you should never memorize.

As far as the laws of mathematics refer to reality, they are not certain, and as far as they are certain, they do not refer to reality.

I am by heritage a Jew, by citizenship a Swiss, and by makeup a human being, and only a human being, without any special attachment to any state or national entity whatsoever.

Music has no effect on research work, but both are born of the same source and complement each other through the satisfaction they bestow

In a healthy nation there is a kind of dramatic balance between the will of the people and the government, which prevents its degeneration into tyranny.

No fairer destiny could be allotted to any physical theory than that it should of itself point out the way to the introduction of a more comprehensive theory, in which it lives on as a limiting case.