The greatest tragedy of human existence is the illusion of separateness.

If I were not a physicist, I would probably be a musician. I often think in music. I live my daydreams in music. I see my life in terms of music.

It is my view that the vegetarian manner of living, by its purely physical effect on the human temperament, would most beneficially influence the lot of mankind.

I am a deeply religious nonbeliever - this is a somewhat new kind of religion.

Logic can take you from point A to point B. Imagination can take you wherever you want

As long as there are sovereign nations possessing great power, war is inevitable.

Every kind of peaceful cooperation among men is primarily based on mutual trust and only secondarily on institutions such as courts of justice and police.