I tentatively believe in a god. I was brought up in a fairly religious home. I think the world is compatible with reincarnation, karma, all that stuff.

Even if I was a bad right wing guy, to the extent of whether my arguments are right or wrong, they're right or wrong independently if I'm right or left.

There is no question that global warming will have a significant impact on already existing problems such as malaria, malnutrition, and water shortages. But this doesn't mean the best way to solve them is to cut carbon emissions.

I'm an old member of Greenpeace. I worried intensely, as I think most of my friends did, that the world was coming apart.

The second thing is, if you want to do something about global warming, you have to think much more long-term. There is something wrong with saying we should start using renewables now, while they are still incredibly expensive.

I'm a vegetarian, but I don't expect other people not to eat meat.

I really try to say things as they basically are and it so happens that it is a good message that things are getting better, but there are still problems.