I've got used to criticisms and, naturally, I try to make sure I don't listen to the more extreme ones because most of the people who have taken their rightwing extremist view of my life are people that I've never met.

Well they do have a use, but we should never believe that any international conference is going to suddenly solve problems like the condition of the global environment.

I believe we are going to move into a situation where the more effective conferences will be smaller, more specialized, more focused, with occasional large gatherings to get the attention of the larger world.

I am a socialist in ideology, a capitalist in methodology.

Either we reduce the world's population voluntarily or nature will do this for us, but brutally

Not to say that corporations are perfect today, but even grand corporations like Dupont have made immense progress in translating some of their past environmentally damaging practices into new profit opportunities.

We owe at least this much to future generations, from whom we have borrowed a fragile planet called Earth.