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.

I stand before you and the world humbled by this recognition and uplifted by the honour of being the 2004 Nobel Peace Laureate. As the first African woman to receive this prize, I accept it on behalf of the people of Kenya and Africa, and indeed the world. I am especially mindful of women and the girl child. I hope it will encourage them to raise their voices and take more space for leadership.

It was easy for me to be ridiculed and for both men and women to perceive that maybe I'm a bit crazy because I'm educated in the West and I have lost some of my basic decency as an African woman.

When these resources are degraded or polluted, then there are fewer of them for the rest of us, and then we start competing for them and eventually as we compete, there are those of us, who have the capacity, who have the ability to be the controllers, to decide who accesses them, how much they access, and eventually there is a conflict. Those who feel marginalized, those who feel excluded, eventually react in an effort to get their own justice, and we have conflict.

It is evident that many wars are fought over resources which are now becoming increasingly scarce. If we conserved our resources better, fighting over them would not occur ... protecting the global environment is directly related to securing peace. Those of us who understand the complex concept of the environment have the burden to act. We must not tire, we must not give up, we must persist.

Until you dig a hole, you plant a tree, you water it and make it survive, you haven't done a thing. You are just talking.

Passion begins with a burden and a split-second moment, when you understand something like never before. That burden is on those who know. Those who don't know are at peace. Those of us who do know get disturbed and are forced to take action.