To act intelligently in human affairs is only possible if an attempt is made to understand the thoughts, motives, and apprehension of one's opponent so fully that one can see the world through their eyes.

If you want the answer to anything, go sit in Nature for awhile

We must learn the difficult lesson that the future of Mankind will only be tolerable when our course, in world affairs as in others, is based upon justice and law rather than the threat of naked power.

God is a scientist, not a magician.

If I had only one hour to save the world, I would spend fifty-five minutes defining the problem, and only five minutes finding the solution.

In the middle of adversity there is great opportunity.

It is really a puzzle what drives one to take one's work so devilishly seriously.