The system we have is one that protects my rights under a president I don`t approve. That tomorrow we`ll do the same for you. And what people have in common is their commitment to those shared rules. And if you have someone who was a challenger to the shared rules, that`s unacceptable. And we`ve never seen that before. Not in a long, long time but we see it now.

People who want to wage cultural wars ought to keep in mind that cultural views often don't move at all for a very long time, but when they move they can move very fast.

One might almost say, to adapt von Clausewitz, that modern warfare is PR by other means. And war-winning strategies mean that modern armies most stop treating their communications operations as secondary assignments or (as still too often happens) dumping grounds for officers who have failed at everything else - but as missions absolutely essential to success.

Donald Trump has declared that he's going to divest himself from his companies and that his sons will be separated from the government. But his sons who run the company are regularly attending his meetings with senators, making it clear to everybody, you want access to Trump you pay.

One of the great drivers of the alienation that has made Donald Trump possible is that the growth in the American economy has been weak. In the decade from 2005 to 2015, there was not one year when the US hit three per cent growth. And to the extent there's been growth, virtually all of it has been collected by the top 10 per cent of the population. Obviously, if we knew how to make growth faster, we would. We don't. And it's very difficult to make growth more broadly shared. Because it's not just the US that has this problem.

A presidential speech is always the work of many hands.

I think the single most important question is how do you maximize the number of children who grow up in stable two-parent households. We know in all kinds of ways it makes a huge difference to how kids come out and we are hardening into a caste society where some kids do better in all kinds of ways because they have two parents and others don't.