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.

The people are learning that you cannot leave decisions only to leaders. Local groups have to create the political will for change, rather than waiting for others to do things for them. That is where positive, and sustainable, change begins.

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.

I think [GMO] is one area where the is a need for legal regulations to make sure that companies - because at the moment, companies are the ones that have this technology - will not use this technology in a way that could adversely affect the people.

It is very important for young people not to be afraid of engaging in areas that are not common to the youth. Get involved in local activities, get involved in local initiatives, be involved in leadership positions because you can’t learn unless you are involved. And if you make mistakes that is alright too because we all make mistakes and we learn from those mistakes. You gain confidence from learning, failing and rising again.

We tend to put the environment last because we think the first thing we have to do is eliminate poverty and send children to school and provide health.

The women of the Green Belt Movement have learned about the causes and the symptoms of environmental degradation. They have begun to appreciate that they, rather than their government, ought to be the custodians of the environment.