Human beings, vegetables, or cosmic dust, we all dance to a mysterious tune, intoned in the distance by an invisible piper.

The ideals which have lighted me on my way and time after time given me new courage to face life cheerfully, have been Truth, Goodness, and Beauty.

Nature shows us only the tail of the lion. But I have no doubt that the lion belongs with it even if he cannot reveal himself all at once. We see him only the way a louse that sits upon him would.

Problems cannot be solved with the same mind set that created them.

I maintain that the cosmic religious feeling is the strongest and noblest motive for scientific research.

The highest principles for our aspirations and judgments are given to us in the Jewish-Christian religious tradition.

Stay away from negative people. They have a problem for every solution.