The emotional state that leads to achievements resembles that of a worshiper or the lover.

The important thing is not to stop questioning. Curiosity has its own reason for existing. One cannot help but be in awe when he contemplates the mysteries of eternity, of life, of the marvelous structure of reality. It is enough if one tries merely to comprehend a little of this mystery every day. Never lose a holy curiosity.

When forced to summarize the general theory of relativity in one sentence: Time and space and gravitation have no separate existence from matter.

There is separation of colored people from white people in the United States. That separation is not a disease of colored people. It is a disease of white people. I do not intend to be quiet about it.

It would be possible to describe everything scientifically, but it would make no sense; it would be without meaning, as if you described a Beethoven symphony as a variation of wave pressure.

Gravity is a response to geometry.

We owe a lot to the Indians, who taught us how to count, without which no worthwhile scientific discovery could have been made.