What happens when corn and wheat prices rise is that we see real increases in malnutrition and under-nutrition. And when children are malnourished, their brain development actually slows down and is affected. So this is not just a short-term impact.

Ending poverty and ensuring sustainability are the defining challenges of our time. Energy is central to both of them.

Carbon is the currency of how you measure climate change, but water will be the teeth.

Today there are a lot places where people say they're just hopeless. If I can come from a hopeless country, get an education, become a hyphenated American and become president of the World Bank, it's my moral duty to make sure that every single person on the planet has that opportunity.

We have to find climate-friendly ways of encouraging economic growth. The good news is we think they exist.

One of the most important things about leadership is that you have to have the kind of humility that will allow you to be coached.

We will never end poverty if we don't tackle climate change.