People who develop the habit of thinking of themselves as world citizens are fulfilling the first requirement of sanity in our time

Man is not imprisoned by habit. Great changes in him can be wrought by crisis -- once that crisis can be recognized and understood.

Man is not imprisoned by habit. Great changes in him can be wrought by crisis - once that crisis can be recognized and understood.

Laughter is a powerful way to tap positive emotions

I do not object to people looking at their watches when I am speaking. But I strongly object when they start shaking them to make sure they are still going.

The main failure of education is that it has not prepared people to comprehend matters concerning human destiny.