The one great gift to humankind from our nuclear physicists has been the nuclear bomb. How can we ever thank them?

We need the possibility of escape as surely as we need hope.

If a man’s imagination were not so weak, so easily tired, if his capacity for wonder not so limited, he would abandon forever such fantasies of the supernal. He would learn to perceive in water, leaves and silence more than sufficient of the absolute and marvelous, more than enough to console him for the loss of the ancient dream.

When a man must be afraid to drink freely from his country's river and streams that country is no longer fit to live in.

A leader leads from in front, by the power of example. A ruler pushes from behind, by means of the club, the whip, the power of fear.

I would prefer to write about everything; what else is there? But one must be selective.

The distrust of wit is the beginning of tyranny.