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

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

No matter how good you think you are as a leader, my goodness, the people around you will have all kinds of ideas for how you can get better. So for me, the most fundamental thing about leadership is to have the humility to continue to get feedback and to try to get better - because your job is to try to help everybody else get better.

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

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

When you're working on development issues, optimism is not always based on rational analysis, often it is a moral choice.