Don't let yourself be lulled into inaction.

This social-networking thing takes you to crazy places.

We've got to put a lot of money into changing behavior.

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

Rules broken today become norms tomorrow.

Research shows that there is only half as much variation in student achievement between schools as there is among classrooms in the same school. If you want your child to get the best education possible, it is actually more important to get him assigned to a great teacher than to a great school.

Our modern lifestyle is not a political creation. Before 1700, everybody was poor as hell. Life was short and brutish. It wasn't because we didn't have good politicians; we had some really good politicians. But then we started inventing - electricity, steam engines, microprocessors, understanding genetics and medicine and things like that. Yes, stability and education are important - I'm not taking anything away from that - but innovation is the real driver of progress.