The mark of a truly civilized man is confidence in the strength and security derived from the inquiring mind.

Wisdom too often never comes, and so one ought not to reject it merely because it comes late.

Anybody can decide a question if only a single principle is in controversy.

I don't like a man to be too efficient. He's likely to be not human enough.

The dynamo of our economic system is self-interest which may range from mere petty greed to admirable types of self-expression.