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.

Those of us who witness the degraded state of the environment and the suffering that comes with it cannot afford to be complacent. We continue to be restless. If we really carry the burden, we are driven to action. We cannot tire or give up. We owe it to the present and future generations of all species to rise up and walk!

Recognizing that sustainable development, democracy and peace are indivisible is an idea whose time has come... Today we are faced with a challenge that calls for a shift in our thinking, so that humanity stops threatening its life-support system. We are called to assist the Earth to heal her wounds and in the process heal our own - indeed, to embrace the whole of creation in all its diversity, beauty and wonder.

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.

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.

What is really important is to educate people how to protect themselves and how to ensure that, despite their poverty, they can get tested and access drugs. So I just hope that those who can will make those drugs available.

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