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

A lot of young people dont think they can make a difference. Thats really what I am at Dartmouth to do. Im there to tell the young people, Look, a few committed souls can change the world.

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

If we do not act to curb climate change immediately, we will leave our children and grandchildren an unrecognizable planetIt is the poor, those least responsible for climate change and least able to afford adaptation, who would suffer the most.

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.

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.

Unless you invest in people, you are not going to see growth in the long term, the medium term, and maybe even the short term.