When people can't use you, they ridicule what you represent. I was lucky that I understood that, because when one does not understand that, it is very easy to be broken and to be subdued.

Resources on the planet are limited, and limited resources can come to an end. But there are also a lot of resources that are renewable. A lot of land, for example, can be reclaimed from the encroaching deserts.

Now when Nile perch was introduced [into Lake Victoria], I don't think enough research was done; maybe it was done, maybe it was not. But Nile perch is a huge fish. So it ate all the little fish, and it grew into a monster which the local people could not fish with their little boats and their little nets.

I want to do the right things - I want to plant trees, I want to make sure that the indigenous forests are protected because I know, whatever happens, these are the forests that contain biodiversity, these are the forests that help us retain water when it rains and keep our rivers flowing, these are the forests that many future generations will need.

If Africa is left behind, she is going to continue pumping greenhouse gases into the atmosphere, especially carbon. She's going to continue logging the forests, she's going to continue burning charcoal, she is going to continue practicing agricultural activities that destroy the environment, and sooner or later Africa's problem will become a global problem.

Nile perch is a fish that was introduced into Lake Victoria. The reason that fish was introduced into Lake Victoria was because it was decided that the people living near the lake needed more proteins than they were getting.

People need open space. People need to bring their children into an area where they can play without restriction." And I was told, "This is development." And I said, "That is not development, definitely not sustainable development, definitely not responsible development. People need fresh air. They can do without buildings. They can do without concrete. But they cannot do without fresh air.