There are cases where government-to-government aid actually has worked. Look at the eradication of smallpox and the near eradication of polio. But these are really top down solutions that require government-to-government support and aid.

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.

I think we so often equate leadership with being experts - the leader is supposed to come in and fix things. But in this interconnected world we live in now, it's almost impossible for just one person to do that.

Just start Don't wait for perfection. Just start and let the work teach you.

My dream is to find individuals who take financial resources and convert them into changing the world in the most positive ways.

When systems are broken, it's an opportunity for invention and innovation.

Girls and women are most victimised in societies where boys and men are disempowered.