Power is the by-product of understanding.

Knowledge is an unending adventure at the edge of uncertainty.

The values by which we are to survive are not rules for just and unjust conduct, but are those deeper illuminations in whose light justice and injustice, good and evil, means and ends are seen in fearful sharpness of outline.

Dissent is the native activity of the scientist, and it has got him into a good deal of trouble in the last years. But if that is cut off, what is left will not be a scientist. And I doubt whether it will be a man.

As you continue to work on a show, if I still feel inspired, and I feel they are making exciting choices, then our enthusiasm remains. This is not a perfect science. It's an evolutionary process.

The decline of particle physics in the U.S. is really a symptom of the erratic and sometimes anti-scientific attitudes in Washington and the incompetence of Congress in managing science.

Starting on February 1, 2010, and running through until May 30, I will be Toronto Public Library's Writer in Residence, working out of the Merril Collection of Science Fiction, Fantasy, and Speculation at the Lillian H. Smith branch at College and Spadina.

We know there must be new physics. For example, we cannot explain what dark matter is.