You cannot prevent and prepare for war at the same time.

Physics is essentially an intuitive and concrete science. Mathematics is only a means for expressing the laws that govern phenomena.

I agree with Schopenhauer that one of the most powerful motives that attracts people to science and art is the longing to escape from everyday life.

Well, I have considered myself to be very fortunate in that I have been able to do mostly only that which my inner self told me to do... I am also aware that I do receive much criticism from the outside world for what I do and some people actually get angry at me. But this does not really touch me because I feel that these people do not live in he same world as do I.

The wonder of nature does not become smaller because one cannot measure it by the standards of human moral and human aims.

If you have never failed, you have never tried anything new.

Our entire much-praised technological progress, and civilization generally, could be compared to an axe in the hand of a pathological criminal.