We cannot tire or give up. We owe it to the present and future generations of all species to rise up and walk!

I would like to call on young people to commit themselves to activities that contribute toward achieving their long-term dreams. They have the energy and creativity to shape a sustainable future. To the young people I say, you are a gift to your communities and indeed the world. You are our hope and our future.

The developed world should be willing to help [Africa] and support her and make this energy affordable.

As a scientist I cannot say we don't want to hear anything about GMOs, because these are advances in science. But I think its also important, especially when you are dealing with food, to be cautious.

We owe it to ourselves and to the next generation to conserve the environment so that we can bequeath our children a sustainable world that benefits all.

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.

Nobody in the world is completely dependent on another person, but we are all interdependent.