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

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.

Today's science is tomorrow's technology.

Society's emissions of carbon dioxide may or may not turn out to have something significant to do with global warming-the jury is still out.

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

The scientist is not responsible for the laws of nature. It is his job to find out how these laws operate. It is the scientist's job to find the ways in which these laws can serve the human will. However, it is not the scientist's job to determine whether a hydrogen bomb should be constructed, whether it should be used, or how it should be used. This responsibility rests with the American people and with their chosen representatives.

Really exotic methods of propulsion . . . will have to be devised to get there. How it will be done, I do not know. Whether it will be done, I am not quite certain. But I would bet it can be done.