We have a responsibility to protect the rights of generations, of all species, that cannot speak for themselves today. The global challenge of climate change requires that we ask no less of our leaders, or ourselves.

Education, if it means anything, should not take people away from the land, but instill in them even more respect for it, because educated people are in a position to understand what is being lost. The future of the planet concerns all of us, and all of us should do what we can to protect it. As I told the foresters, and the women, you don't need a diploma to plant a tree.

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.

It goes to local authorities and even to members of Parliament so that individual citizens almost become people who want to sit and wait for their member of Parliament to come and solve the problem. Now that won't take you anywhere. And if you follow it, you will see that it feeds corruption in the country.

All of us have a God in us, and that God is the spirit that unites all life, everything that is on this planet.

It was easy to persecute me without people feeling ashamed. It was easy to vilify me and project me as a woman who was not following the tradition of a 'good African woman' and as a highly educated elitist who was trying to show innocent African women ways of doing things that were not acceptable to African men.

We can work together for a better world with men and women of goodwill, those who radiate the intrinsic goodness of humankind. To do so effectively, the world needs a global ethic with values which give meaning to life experiences and, more than religious institutions and dogmas, sustain the non-material dimension of humanity. Mankind's universal values of love, compassion, solidarity, caring and tolerance should form the basis for this global ethic which should permeate culture, politics, trade, religion and philosophy. It should also permeate the extended family of the United Nations.