When Britain and the U.S. invaded Iraq, it was with the reasonable expectation that it was going to increase the threat of terror, as it has.

Well the protester I think is a very powerful thing. It's basically a mechanism of democracy that, along with capitalism, scientific innovation, those things have built the modern world. And it's wonderful that the new tools have empowered that protestor so that state secrets, bad developments are not hidden anymore.

I have often thought that if a rational Fascist dictatorship were to exist, then it would choose the American system.

Any man who wants to be president is either an egomaniac or crazy.

I'm not as famous as Stephen Hawking, but certainly in the U.S., I have a very high profile for a scientist. It is an awesome responsibility, one that I don't shoulder lightly.