The corruption will come back to haunt the Trump administration. But mostly, it'll come back to haunt the American economy, as companies decide they can make money by rent-seeking, by getting money from government rather than earning it the old-fashioned way.

It’s worth noting that you can devote your life to community service and be a total schmuck. You can spend your life on Wall Street and be a hero

Some children lack tools to see their course in the world in far-sighted ways. Just introducing school vouchers won't change that. You have to have nurse-home partnerships, early childhood education, mentoring programs and so on. People learn from people they love.

[Donald Trump] has shifted - President [Barack] Obama has shifted American policy in a much more critical way in Israel with the settlements than the previous presidents.

There was this famous clash of civilization thesis from Samuel Huntington, a political theorist. And the idea was that Western civilization is at war with Islam and maybe some of the other civilizations around the world. And I don't agree with that. But I do think there is such a thing as Western civilization. I think it starts with the Greeks and the Romans. Then it goes through the Enlightenment - or the Reformation, the Enlightenment. It goes through the scientific age. And it somewhat defines some of the cultures and mores of Europe and North America and some other countries.

The zooming wealth of the top 1 percent is a problem, but it's not nearly as big a problem as the tens of millions of Americans who have dropped out of high school or college. It's not nearly as big a problem as the 40 percent of children who are born out of wedlock. It's not nearly as big a problem as the nation's stagnant human capital, its stagnant social mobility and the disorganized social fabric for the bottom 50 percent.

Just, as I have traveled around from school to school, whether it's project-based learning or an outward bound curriculum, it's very hard to tell the difference between charters and public anymore. There's no fine line.