Committees do harm merely by existing.

The media always tries to make everything into a disaster, but it's mostly rubbish.

We do not know how much of the environmental change is due to human activities and how much [is due] to long-term natural processes over which we have no control.

That's, of course, the beautiful thing about science - that it's all about things we don't understand, not just the things we do understand.

If you don't have a nasty obituary you probably didn't matter.

It is in the long run essential to the growth of any new and high civilization that small groups of men can escape from their neighbors and from their government, to go and live as they please in the wilderness. A truly isolated, small, and creative society will never again be possible on this planet.

I just enjoy calculating, and it's an instrument I know how to play. It's almost an athletic performance, in a way. I was just watching the Olympics, and that's how I feel when proving a theorem.