I think of myself as a global citizen.

In my parents I saw a model where they were really always communicating, doing things together. They were really kind of a team. I wanted some of that magic myself.

When I was trying to figure out why lives have improved so much in the last 300 years, where we've gone from a third of kids dying before 5 to - by 1990 it was down to 10% - now it's down to 5%. And saying why, over all history, there were smart people, but that number didn't change. Average life span didn't change. What's magical about what's been deemed the Industrial Revolution? It's really energy intensity.

In K-12, almost everybody goes to local schools. Universities are a bit different because kids actually do pick the university. The bizarre thing, though, is that the merit of university is actually how good the students going in are: the SAT scores of the kids going in.

We all have the chance to create a world where extreme poverty is the exception rather than the rule.

Microsoft has long hired based on IQ and "intellectual bandwidth."

Personally, I'd like to see more of our leaders take a technocratic approach to solving our biggest problems.