There are certain areas where foreign investors can help the local people to generate wealth, and improve their quality of life. Some companies, for example, Del Monte, which produces pineapples in Kenya, pay a huge amount of taxes, I am sure, to the Kenyan government, and they do create jobs for thousands of locals.

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.

One of the reasons why we started the Green Belt Movement is to work with these ordinary peasant farmers so as to educate them that, despite the fact that they are poor, it is in their interest to protect the soil that they have, to protect the forest they have, to protect the land that they have, because if they don't do it, things can be only worse tomorrow for them for them and for their children.

One of the reasons why I say we all need to work together to save the Congo forest, because if we don't save the Congo forest, the Amazon forest and the southeast Asia forest, if those forests release the carbon they are trapping at the moment, much of what you will be doing in the North will be negated by the amount of carbon released into the atmosphere.

It's very important to remain optimistic and to see the silver lining in everything you do. Because no matter how sometimes things look difficult, and look like there is no hope, there is always a small glimmering of silver lining that is in everything, and I always look for that, and hang on that, and before I know it, another day comes and is gone.

There are certain areas where foreign investors can help the local people to generate wealth, and improve their quality of life. Some companies, for example, Del Monte, which produces pineapples in Kenya, pay a huge amount of taxes, I am sure, to the Kenyan government, and they do create jobs for thousands of locals.