People are dynamic. They change, and soon as there are enough of you, things change [for a whole society].

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.

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.

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.

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.

When I went back home, I was constantly being reminded, I'm an African woman, and so there are certain things I shouldn't do, certain ambitions that I should not entertain. That was a problem for me because I had never thought of myself as an African woman, never thought of myself as a woman to begin with. For me the limit was my capacity, my capability.

The planet needs trees. If there is indeed that carbon dioxide out there in the atmosphere, the only species on the planet that can actually trap it for us in a natural process of photosynthesis are the trees.