There will always be people who think that you have ambitions.

People are dynamic. They change, and soon as there are enough of you, things change [for a whole society].

When resources are degraded, we start competing for them, whether it is at the local level in Kenya, where we had tribal clashes over land and water, or at the global level, where we are fighting over water, oil, and minerals. So one way to promote peace is to promote sustainable management and equitable distribution of resources.

Obviously the world is moving away from high carbon energy to low carbon energy, and eventually moving away toward renewable energy. So it is in the interest of Africa to move towards that, because that's where the world is moving.

In a few decades, the relationship between the environment, resources and conflict may seem almost as obvious as the connection we see today between human rights, democracy and peace.

And so I'm saying that, yes, colonialism was terrible, and I describe it as a legacy of wars, but we ought to be moving away from that by now.

It is wonderful when you don't have the fear, and a lot of the time I don't ... I focus on what needs to be done instead.