Education of course is a very empowering experience, so many people who went to school also managed to improve their quality of life much faster because they could get a job, they could get money, and with money you could buy things that you cannot buy if you don't have money.

We think that diamonds are very important, gold is very important, all these minerals are very important. We call them precious minerals, but they are all forms of the soil. But that part of this mineral that is on top, like it is the skin of the earth, that is the most precious of the commons.

The government of Qatar, as I mentioned, has proposed to come and lease Kenya's Tana River delta in order to farm there. What I am not sure of is, has an environmental impact assessment been made to ensure that exploiting this delta for agricultural activities is the best way we can use the delta?We must be concerned about the long-term impact of agricultural activities in the delta.

When you know who you are you are free.

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.

There's a general culture in this country to cut all the trees. It makes me so angry because everyone is cutting and no one is planting.

We do the right thing not to please people but because it's the only logically reasonable thing to do, as long as we are being honest with ourselves - even if we are the only ones.