I get the facts, I study them patiently, I apply imagination.

Never answer a critic, unless he's right.

Our problem in money-making or government affairs is how to remain properly venturesome and experimental without making fools of ourselves.

Whatever you do, do it with all your heart and soul.

Only as you do know yourself can your brain serve you as a sharp and efficient tool. Know your own failings, passions, and prejudices so you can separate them from what you see.

The greatest blessing of our democracy is freedom. But in the last analysis, our only freedom is the freedom to discipline ourselves.

Unless each man produces more than he receives, increases his output, there will be less for him than all the others.