Beware of clichés. Not just the ­clichés that Martin Amis is at war with. There are clichés of response as well as expression. There are clichés of observation and of thought - even of conception. Many novels, even quite a few adequately written ones, are ­clichés of form which conform to clichés of expectation.

All sorts of things can keep one awake. But as you get older - this is what the stroke thing really brought home to me - this thing that I never paid attention to: my brain. I've always been conscious that, of course, after a night of getting stoned, my head would feel foggy; if I got drunk the night before I'd be hungover. But that was the extent of my concern about my brain. And then with the stroke thing, it made me realize, "God! That's my main source of income." So it relates actually to your other question about growing old.

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.

Have regrets. They are fuel. On the page they flare into desire.

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.

He [Thelonious Monk] played each note as though astonished by the previous one, as though every touch of his fingers on the keyboard was correcting an error and this touch in turn became an error to be corrected and so the tune never quite ended up the way it was meant to.

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.