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.

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.

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

I have seen a lot of men, for example, who will make a will and include their daughters whether they are married or not. And perhaps the greatest change of attitude is that today, at least in Kenya, if you don't send your child to school - unless it's a matter of poverty or religion, and it is not that there no schools - then people wonder, "why the hell don't you send your children to school?" Now that's a very big jump from when I was going to school and educating girls was an exception to the rule.

Education of course is a very empowering experience, so many people who went to school also managed to improve their quality of life much faster because they could get a job, they could get money, and with money you could buy things that you cannot buy if you don't have money.

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.

Why has there been so much secrecy about AIDS? When you ask where did the virus come from, it raises a lot of flags. That makes me suspicious.