I believe we should build a wall - it might or might not slow immigration but it's worth a try and certainly that would provide political cover for the right when they compromise on other approaches to immigration. On the other hand, I believe there should be a path to citizenship for people who have been law-abiding except for having coming to the U.S. illegally.

At every stage since World War II, people have assumed that what's happening today will happen forever. Universally, that's been wrong. I can't say in which direction but I do think that what we expect today won't be what we'll get in 15 years.

When you become 70, you can't deny that you're on the downhill. But I keep doing what I've been doing. If I retired, what would I do? I'd brood about my kids and I'd play around with my investments, which would probably cost me.

People prefer to be with people like themselves. For all the celebration of "diversity," it's sameness that dominates. Most people favor friendships with those who share similar backgrounds, interests and values. It makes for more shared experiences, easier conversations and more comfortable silences. Despite many exceptions, the urge is nearly universal. It's human nature.

In politics, there's a fine line between too much conviction and too little.

The tendency for politicians to claim credit for favorable news is as natural as flatulence in cows.

Probably the only people left who think that economics deserves a Nobel Prize are economists. It confirms their conceit that they're doing 'science' rather than the less tidy task of observing the world and trying to make sense of it. This, after all, is done by mere historians, political scientists, anthropologists, sociologists, and (heaven forbid) even journalists. Economists are loath to admit that they belong in such raffish company.