I'm quite worried about the fiscal imbalances that we've got and what that might mean in terms of financial crisis ahead.

Hey, size works against excellence.

Kenya’s M-Pesa proves that when people are empowered, they will use digital tech to innovate on their own behalf.

I hope you will judge yourselves not on your professional accomplishments alone, but also on how well you have addressed the world's deepest inequities...on how well you treated people a world away who have nothing in common with you but your humanity.

Almost every way we make electricity today, except for the emerging renewables and nuclear, puts out CO2. And so, what we're going to have to do at a global scale, is create a new system. And so, we need energy miracles.

Don't let complexity stop you.

I believe innovation is the most powerful force for change in the world. People who are pessimistic about the future tend to extrapolate from the present in a straight line. But innovation fundamentally shifts the trajectory of development.