We must be careful not to discourage our twelve-year-olds by making them waste the best years of their lives preparing for examinations.

It's amazing how much progress there's been in China, and also India. Those are the places that really matter - they're half of the world's population. They're the places where things are enormously better now than they were 50 years ago. And I don't see anything that's going to stop that.

Plasma seems to have the kinds of properties one would like for life. It's somewhat like liquid water--unpredictable and thus able to behave in an enormously complex fashion. It could probably carry as much information as DNA does. It has at least the potential for organizing itself in interesting ways.

I think that what the machines can do, of course, is wonderful, but it's not the same as what the brain can do.

One factor that has remained constant through all the twists and turns of the history of physical science is the decisive importance of the mathematical imagination.

The fact that the climate is getting warmer doesn't scare me at all. There's no reason why one should be scared.

I don't know, but I think it's quite possible that the more science you teach kids in school the more it turns them off, so I don't know. I mean you never can tell which way it will go.