I am guilty of the great crime of optimism.

The best weapon of a dictatorship is secrecy; the best weapon of a democracy is openness.

A fact is a simple statement that everyone believes. It is innocent, unless found guilty. A hypothesis is a novel suggestion that no one wants to believe. It is guilty, until found effective.

In the theater you create a moment, but in that moment, there is a touch, a twinkle of eternity. And not just eternity, but community. . . . That connection is a sense of life for me.

Physics without mathematics is meaningless.

There is a time for scientists and movie stars and those who have flown the atlantic to restrain their opinions lest they be taken more seriously than they should be.

The extinction of the human race will come from its inability to EMOTIONALLY comprehend the exponential function.