The Prime Minister of India, at a meeting that I co-chaired a few months ago, stated that any development that is not sustainable is not development.

I learn something from criticism because when it comes from sources you respect you always examine it and learn.

Nevertheless, the concept of sustainable development is now known - even amongst those who haven't accepted it - and it's recognized, debated and followed by an increasing number of businesses.

I am convinced the prophets of doom have to be taken seriously.

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.

My belief is that the purpose of economic life is to meet the social needs of people.