I'm always impressed with what young people can do before older people tell them it's impossible

Politicians are like weather vanes. Our job is to make the wind blow.

To me, a wilderness is where the flow of wildness is essentially uninterrupted by technology; without wilderness the world is a cage.

You don't need it, but will you take some advice from a Californian who's been around for a while? Cherish these rivers. Witness for them. Enjoy their unimprovable purpose as you sense it, and let those rivers that you never visit comfort you with the assurance that they are there, doing wonderfully what they have always done.

If something's going wrong with this planet we'd better fix it here and not look for some sort of escape.

Realistic' is a loaded word for me. Anyone who uses the word 'realistic' is all bad.

Until four years ago, in fact, I was absolutely in love with the atom.