All religions, arts and sciences are branches of the same tree.

Few people are capable of expressing with equanimity opinions which differ from the prejudices of their social environment. Most people are even incapable of forming such opinions.

Most people say that it is the intellect which makes a great scientist. They are wrong: it is character.

Without deep reflection one knows from daily life that one exists for other people.

Intellectual growth should commence at birth and cease only at death.

Coincidence is God's way of remaining anonymous.

You ask me if I keep a notebook to record my great ideas. I've only ever had one.

There could be no fairer destiny for any physical theory than that it should point the way to a more comprehensive theory in which it lives on as a limiting case.

The whole of science is nothing more than a refinement of everyday thinking.

Human beings must have action; and they will make it if they cannot find it.