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

Physics is, hopefully, simple. Physicists are not.

If there ever was a misnomer, it is "exact science." Science has always been full of mistakes. The present day is no exception. And our mistakes are good mistakes; they require a genius to correct. Of course, we do not see our own mistakes.

The science of today is the technology of tomorrow.

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.

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.

If not for me, the H-bomb would have been developed in Russia first. In the U.S., we'd now be speaking Russian.