Intellectuals solve problems, geniuses prevent them.

God has given me a mule-like stubbornness to stick with a difficult problem and the intuitive powers to conceptualize complex hypothetical situations in my mind.

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.

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.

It is important to foster individuality, for only the individual can produce the new ideas.

The grand aim of all science is to cover the greatest number of empirical facts by logical deduction from the smallest number of hypotheses or axioms.

The most important method of education always has consisted of that in which the pupil was urged to actual performance.