We know that if you have $20 million, it's better to buy a van Gough print than it is buy an executive jet, from the point of view of the environment. But when you start getting down, it's like the recycling question: What are things we can really afford to do, and how much pleasure do we get out of them? We haven't even started to have that discussion, and it's getting awfully late.

There's all of this stuff where we have so much debate over nonsense; it could be cured if we had a better educational system, if we trained people to really try and look into things on their own. That's a tough thing to do, particularly with the educational system staggering.

Stanford may be the best university in the world, but you can get all the way through here without knowing where your food came from, without being able to say where we came from, without being able to give a coherent description of why the climate is changing and why we should be concerned about it. So I started teaching a course in human evolution and the environment that's open to all Stanford students, no prerequisites.

Most of the scientists I know think civilization is teetering on the brink of a global disaster. They just don't know when it's going to hit. I don't have the answer to that either. I'm scared as hell.

I would take even money that England will not exist in the year 2000.

Chinese are already more on board than we are. China is the only country that actually discussed in formal government documents how important it is to control the size of your populations if you’re going to limit emissions.

The drilling idea is spherically senseless - it's senseless from whatever point of view you look at it. It'd take 10 years to bring any oil online, and it would probably go to Japan. It sure wouldn't help gasoline prices here. All the economists say gasoline is still too cheap in the United States anyway. So here we're having this huge debate over offshore drilling that is just straightforward nonsense, which won't surprise you.