The use of force to liberate people is very different from the use of force to suppress or control them, or even to defeat them.

Islamic State is mainly a direct result of the failure in Syria. That's where IS has grown. That's where IS spread from.

The Bernie Sanders phenomenon shows that it's not confined to Republicans. There is a general sentiment that America is on the wrong track.

You cant win if youre chasing the wrong problem.

History is just littered with problems that were solved that were supposed to be impossible.

Every math curriculum in the world is based on the idea of hand-calculating, and most of what you're teaching is how to calculate. And I think the resistance to this is very variable.

That sense of what happened in Europe in World War II has shaped a lot of my views.