Good programmers stay open minded to that even though there is no obvious way to improve what they've done they... they keep looking and they listen to what other people have to say.

Corruption is one of the most common reasons I hear in views that criticize aid.

It's energy intensification, where we essentially have, through our light bulbs and cars, the manpower of [hundreds of] people working on our behalf, helping our food being created, helping our materials like steel and plastic and wood and paper be created. Our lifestyles are incredibly energy intense.

If you are low income in the United States, you have a higher chance of going to jail than getting a 4-year degree.

Investing for the poor requires participation from the entire community.

In a system of capitalism, as people's wealth rises, the financial incentive to serve them rises. As their wealth falls, the financial incentive to serve them falls, until it becomes zero. We have to find a way to make the aspects of capitalism that serve wealthier people serve poorer people as well.

The world today has 6.8 billion people...that's headed up to about 9 billion. If we do a really great job on vaccines, health care, reproductive health services, we could lower that by perhaps 10 to 15 percent.