The genius of capitalism lies in its ability to make self-interest serve the wider interest. The potential of a big financial return for innovation unleashes a broad set of talented people in pursuit of many different discoveries. This system, driven by self-interest, is responsible for the incredible innovations that have improved so many lives.

I spend a lot of time reading.

It's an experiment, and it's probably good to have a couple states try it out to see before you make that national policy.

I'm not a macroeconomics person.

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.

The people who resist change will be confronted by the growing number of people who see that better ways are available; thanks to technology.

It's easier to add things on to a PC than it's ever been before. It's one click, and boom, it comes down.