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.

Using trees as a symbol of peace is in keeping with a widespread African tradition. For example, the elders of the Kikuyu carried a staff from the thigi tree that, when placed between two disputing sides, caused them to stop fighting and seek reconciliation. Many communities in Africa have these traditions.

We refuse to share resources; we govern irresponsibly. If we are confident, if we have some of our cultural values, then we would be more committed to assisting our people out of poverty and creating an environment that can make it possible for our friends to assist us.

I have always felt that perhaps women have sometimes almost embraced the same values as men, and the same character as men, because they are in the men's world, and they are trying to fit into a system that men have created. And maybe in truth when there is a critical mass of women who play that role in governments, then we will see whether women can really manage power in a way that is less destructive than the way that men have used power.

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.

It's the little things citizens do. That's what will make the difference. My little thing is planting trees.

Every one of us can make a contribution. And quite often we are looking for the big things and forget that, wherever we are, we can make a contribution. Sometimes I tell myself, I may only be planting a tree here, but just imagine what's happening if there are billions of people out there doing something. Just imagine the power of what we can do.