I hate crowds and making speeches. I hate facing cameras and having to answer to a crossfire of questions. Why popular fancy should seize upon me, a scientist, dealing in abstract things and happy if left alone, is a manifestation of mass psychology that is beyond me.

Racism is America's greatest disease, racism is a disease of the white man.

Fantasie is belangrijker dan kennis, want kennis is begrensd.

I want to know the thoughts of God. Everything else is just details.

Falling in love is not at all the most stupid thing that people do - but gravitation cannot be held responsible for it.

Only in mathematics and physics was I, through self-study, far beyond the school curriculum, and also with regard to philosophy as it was taught in the school curriculum.

The most practical solution is a good theory.