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.

We see that the environment is something to exploit, because we see the environment in terms of minerals for example, or forests, or even raw materials that we produce on our land, or even land itself. We see it in terms of what we can exploit rather than the medium in which all of these activities have to take place.

For me, one of the major reasons to move beyond just the planting of trees was that I have tendency to look at the causes of a problem. We often preoccupy ourselves with the symptoms, whereas if we went to the root cause of the problems, we would be able to overcome the problems once and for all.

When I first started, it was really an innocent response to the needs of women in rural areas. When we started planting trees to meet their needs, there was nothing beyond that. I did not see all the issues that I have to come to deal with.

I'm sure the government of Qatar is not coming in to grow food for the people of Kenya; it's coming to grow food to sell. If it can also sell to the people of Kenya, well, then good. I think that the moves can be helpful, but I think that the history that Africa knows, as I say in my book, has been a history of exploitation.

You cannot enslave a mind that knows itself. That values itself. That understands itself.

It is wonderful when you don't have the fear, and a lot of the time I don't ... I focus on what needs to be done instead.