There's something about New York. You can get a nice feeling of belonging as a writer here. It's probably the best city on Earth like that. I miss the wisecracking of New York.

Each of my book arrives at a form and a style that is appropriate to the subject.

I think, about the distinction between fiction and nonfiction. Fiction is not really about anything: it is what it is. But nonfiction - and you see this particularly with something like the BBC Samuel Johnson Prize for Non-Fiction - nonfiction we define in relation to what it's about. So, Stalingrad by Antony Beevor. It's "about" Stalingrad. Or, here's a book by Claire Tomalin: it's "about" Charles Dickens.

Mike Pence came out and said this was a courtesy call, then Donald Trump a few hours later went on Twitter, as is his wont, and essentially linked the call to Taiwan with a whole series of things he doesn't like about Chinese economic and foreign policies and implied that the U.S. views of the status of Taiwan are now up for negotiation, that he wants them to be part of a broader negotiation with China about a whole series of economic and foreign policy issues. So, we just don't really know what exactly they're planing to do with this.

Nine times out of 10, the most charming thing to say in any given situation will be the exact opposite of what one really feels.

I would agree on the aging thing. Because, at a certain point, once you start noticing it, it is your subject. And I know young that people, when they get to 30, say, "Oh, I'm so old." But actually, around 50, you do become conscious of it.

Foreign governments are going to be poring through all these Donald Trump tweets looking for - to try and discern what it means for foreign policy.