There are 60 million generators in Nigeria. The generator owners and distributors have a strong incentive to not encourage the distribution of solar and other alternative energies, even though it's better for the country, it's better for people. As a world, we've got to get more serious about confronting those obstacles. This knows no culture, no race, no ethnicity.

Monsters will always exist. There's one inside each of us. But an angel lives there, too. There is no more important agenda than figuring out how to slay one and nurture the other.

My whole life has been spent with people who have taken every knock in the world. No advantages. Yet they greet you with a big smile, they give you what they have, and they keep coming back. They are the fighters.

I was going to save the world, and I thought I would start with the African continent.

All people deserve access to health at prices they can afford.

One of the first things that surprised me in a positive, wonderfully positive way, is that this works - patient capital works.

Africans didn't want saving, thank you very much, least of all not by me.