We cannot hope to either understand or to manage the carbon in the atmosphere unless we understand and manage the trees and the soil too.

Boiled down to one sentence, my message is the unboundedness of life and the unboundedness of human destiny.

I think it's a big mistake to decide too soon what you're going to do with your life.

I grew up in England and we spent most of the time on Latin and Greek and very little on science, and I think that was good because it meant we didn't get turned off. It was... Science was something we did for fun and not because we had to.

Our thinking is permeated by our historical myths

And somehow mother nature manages to create this incredible biosphere, to create this incredibly rich environment of animals and plants with this amazingly small amount of data.

If you want to have a program for moving out into the universe, you have to think in centuries not in decades.