In the history of physics, there have been three great revolutions in thought that first seemed absurd yet proved to be true. The first proposed that the earth, instead of being stationary, was moving around at a great and variable speed in a universe that is much bigger than it appears to our immediate perception. That proposal, I believe, was first made by Aristarchos two millenia ago ... Remarkably enough, the name Aristarchos in Greek means best beginning.

Physics is, hopefully, simple. Physicists are not.

When you're certain you cannot be fooled, you become easy to fool.

Physics without mathematics is meaningless.

I tried to contribute to the defeat of the Soviets. If I contributed 1%, it is 1% of something enormous.

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

There's no system foolproof enough to defeat a sufficiently great fool.