If you feed your mind as often as you feed your stomach, then you'll never have to worry about feeding your stomach or a roof over your head or clothes on your back.

Creativity is seeing what others see and thinking what no one else has ever thought.

Body and soul are not two different things, but only two different ways of perceiving the same thing. Similarly, physics and psychology are only different attempts to link our experiences together by way of systematic thought.

The release of atomic power has changed everything except our way of thinking ... the solution to this problem lies in the heart of mankind. If only I had known, I should have become a watchmaker. (1945)

Paper is to write things down that we need to remember. Our brains are used to think.

It is my conviction that killing under the cloak of war is nothing but an act of murder.

I have to apologize to you that I am still among the living. There will be a remedy for this, however.