Imagination is the most powerful force in the universe.

I believe that the horrifying deterioration in the ethical conduct of people today stems from the mechanization and dehumanization of our lives. A disastrous by-product of the development of the scientific and technical mentality. We are guilty. Man grows cold faster than the planet he inhabits.

I very rarely think in words at all. A thought comes, and I may try to express in words afterwards.

[Ernest Rutherford is]...a second Newton.

I became more and more convinced that even nature could be understood as a relatively simple mathematical structure.

Don't let your brain interfere with your heart.

If men as individuals surrender to the call of their elementary instincts, avoiding pain and seeking satisfaction only for their own selves, the result for them all taken together must be a state of insecurity, of fear, and of promiscuous misery.