I am convinced there is only one way to eliminate these grave evils, namely through the establishment of a socialist economy, accompanied by an educational system which would be oriented toward social goals.

America is today the hope of all honorable men who respect the rights of their fellow men and who believe in the principle of freedom and justice.

I like to think the moon is there even if I am not looking at it.

One has a feeling that one has a kind of home in this timeless community of human beings that strive for truth. ... I have always believed that Jesus meant by the Kingdom of God the small group scattered all through time of intellectually and ethically valuable people.

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.

A theory can be proved by experiment; but no path leads from experiment to the birth of a theory.

Is it not a terrible thing to be forced by society to do things which all of us as individuals regard as abominable crimes?