I think what the Nobel committee is doing is going beyond war and looking at what humanity can do to prevent war. Sustainable management of our natural resources will promote peace.

That's the way I do things when I want to celebrate, I always plant a tree. And so I got an indigenous tree, called Nandi flame, it has this beautiful red flowers. When it is in flower it is like it is in flame.

Sometimes when I talk to little children I remind them of the fact that when I was growing up myself, I used to play with frog eggs and tadpoles and I used to walk in the field, I used to literally copy whatever my mother was doing on the land. And that may be the reason why I eventually developed the passion for green and for the Earth. So it is extremely important for adults and especially those who are in charge of cities to make sure that we do not lose touch with the land and with the environment. And especially our children.

Some say that AIDS came from the monkeys, and I doubt that because we have been living with monkeys from time immemorial, others say it was a curse from God, but I say it cannot be that.

Having studied biology really helped me a lot because I quickly understand how biological systems work, and how they fail, and the tragedy of when they fail, because we are dealing with life systems, and when we hear that a species has become extinct, or is threatened, you realize that this could mean that this species will disappear from the face of the earth forever! So that understanding really gives you energy to do something to save it.

Why do we have to have people come from afar to come and grow food for us, or to grow food to sell to us? It is partly because we are almost becoming used to people doing things for us. Like somebody else is going to solve that problem for us. And that to me is very disempowering system.

Disempowerment - whether defined in terms of a lack of self-confidence , apathy, fear, or an inability to take charge of one's own life - is perhaps the most unrecognised problem in Africa today.