I can't think of a 30- or 40-year-old who can behave like Mugabe. They wouldn't even know where to begin, and given their own educational exposure, I think it will be very positive for Africa.

Our biggest challenge in this new century is to take an idea that seems abstract - sustainable development - and turn it into a reality for all the world's people

If the United Nations is not as united as it should be, that is because it is a reflection of the world we live in.

We need to keep hope alive and strive to do better.

Young people must be included from birth. A society that cuts itself off from its youth severs its lifeline; it is condemned to bleed to death.

We must bring a message of solidarity, of mutual respect and, above all, of hope. Business cannot afford to be seen as the problem.

The preservation of biodiversity is not just a job for governments. International and non-governmental organisations, the private sector and each and every individual have a role to play in changing entrenched outlooks and ending destructive patterns of behaviour