People have to understand that unless social enterprise is experimental, it will not succeed in making a difference.

We can send people to the Moon; we can see if there's life on Mars - why can't we get $5 [mosquito] nets to 500 million people?

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.

I was encouraged to break all the rules but to take the best of philanthropy, the best of investing, and the best of development finance, and experiment with new ways to create this venture capital model of using philanthropy to back patient capital investments, and then build solutions that were measured in terms of the kind of impact and change they were making on people's lives and in the world, not just on the financial return.

After all this atrocity, this is how human beings really pray.

Poverty is not only about income levels, but for lack of freedom that comes from physical insecurity

When I first went to Africa, I thought that I was personally going to save the continent, if not the world.