I sometimes think that the universe is a machine designed for the perpetual astonishment of astronomers.

The greatest tragedy in mankind's entire history may be the hijacking of morality by religion.

It must be wonderful to be seventeen, and to know everything.

We stand now at the turning point between two eras. Behind us is a past to which we can never return... The coming of the rocket brought to an end a million years of isolation... the childhood of our race was over and history as we know it began.

Any path to knowledge is a path to God-or Reality, whichever word one prefers to use

It may be that the old astrologers had the truth exactly reversed, when they believed that the stars controlled the destinies of men. The time may come when men control the destinies of stars.

If man can live in Manhattan, he can live anywhere.