Education is the key to the future: You've heard it a million times, and it's not wrong. Educated people have higher wages and lower unemployment rates, and better-educated countries grow faster and innovate more than other countries. But going to college is not enough. You also have to study the right subjects.

The first thing you learn when you're blogging is that people are one click away from leaving you. So you've got to get to the point, you can't waste people's time, you've got to give them some value for their limited attention span.

Writing on the blog, you want to get attention and make strong claims. In academic work, that often doesn't pay, so sometimes it's a little bit difficult going back and forth to navigate these differences.

Going to college is neither necessary nor sufficient to be well-educated.

Our obsessive focus on college schooling has blinded us to basic truths. College is a place, not a magic formula. It matters what subjects students study, and subsidies should focus on the subjects that matter the most - not to the students, but to everyone else.

America has the highest standard of living of any major country in the entire world. To maintain and enhance that standard of living, America should continue to embrace those qualities which have made America great: openness and dynamism. Openness to new technologies, new ideas and new people is America's greatest source of strength.

Democracy is an experimental system. I like it when states try out new ideas. I think we ought to expand, not contract, our federalist system.