I hope someday what people can do with their lives depends on their talents and how hard they are willing to work, rather than on where they happen to be born.

Software is the magic thing whose importance only goes up over time.

Skype actually does get a fair bit of revenue.

I have been struck again and again by how important measurement is to improving the human condition.

The only definition by which Americas best days are behind it is on a purely relative basis.

[Smart] is an elusive concept. There's a certain sharpness, an ability to absorb new facts. To ask an insightful question. To relate to domains that may not seem connected at first. A certain creativity that allows people to be effective.

Every three years, we have to go to the governments and say, okay, you know you're saving millions of lives and even though your budgets are tight, helping Africa avoid this disaster really is a priority.