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.

Inertia is a powerful force in human and political affairs.

Current lifestyles and consumption patterns of the affluent middle class…involving high meat intake, consumption of large amounts of frozen and convenience foods, ownership of motor vehicles, golf courses, small electric appliances, home and work place air-conditioning, and suburban housing are not sustainable...

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.

So, what we do as individuals matters. It adds up.

The concept of national sovereignty has been an immutable, indeed sacred, principle of international relations. It is a principle which will yield only slowly and reluctantly to the new imperatives of global environmental cooperation. It is simply not feasible for sovereignty to be exercised unilaterally by individual nation states, however powerful. The global community must be assured of environmental security.

I was with Ted Turner when he came to see Kofi Annan - the Secretary-General of the UN - to announce his decision to put $1 billion to the service of UN projects and programs.