Generations to come will scarce believe that such a one as this ever in flesh and blood walked upon this earth. (said of Mahatma Gandhi)

It is every man's obligation to put back into the world at least the equivalent of what he takes out of it.

It is easier to denature plutonium than to denature the evil spirit of man.

If I were wrong, wouldn't one be enough?

There are moments when one feels free from one's own identification with human limitations and inadequacies. At such moments one imagines that one stands on some spot of a small planet, gazing in amazement at the cold yet profoundly moving beauty of the eternal, the unfathomable; life and death flow into one, and there is neither evolution nor destiny; only Being.

I shall never believe that God plays dice with the world.

How can it be that mathematics, being after all a product of human thought which is independent of experience, is so admirably appropriate to the objects of reality?