The combination of population growth and the growth in consumption is a danger that we are not prepared for and something we will need global co-operation on.

We're either going to save the world or no one will be saved.

Anyone who is seriously interested in me would usually do a little more homework and realise that the extreme criticisms are almost exclusively ideologically based.

We must, from here on in, all go down the same path... There may not be another chance.

What if a small group of world leaders were to conclude that the principal risk to the Earth comes from the actions of the rich countries?... In order to save the planet, the group decides: Isn't the only hope for the planet that the industrialized civilizations collapse? Isn't it our responsibility to bring that about?

Also, it is interesting that developing countries, with China and India perhaps in the lead, where the future of the global environment will be decided are now on board with the case for sustainable development.

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.