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.

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

There will be water and food fights everywhere.

Why is it that when it comes to our most cherished social goal [health care], we not only tolerate poor execution, sometimes we even celebrate it?

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

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 need to have a plan equal to the challenge.