It makes little difference how many university courses or degrees a person may own. If he cannot use words to move an idea from one point to another, his education is incomplete.

Where is the indignation about the fact that the US and USSR have thirty thousand pounds of destructive force for every human being in the world?

Infinity converts the possible into the inevitable.

The growth of the human mind is still high adventure, in many ways the highest adventure on earth.

I have learned never to underestimate the capacity of the human mind and body to regenerate - even when prospects seem most wretched. The life force may be the least understood force on earth.

I've learned that next to the atomic bomb, the greatest danger is defeatism, despair, and inadequate awareness of what human beings possess. I feel that any problem that can be defined is capable of being resolved. Out of this has come my conviction that no person knows enough to be a pessimist.

The control center of your life is your attitude.