The process of book writing for me is entirely one of trial and error.

The perfect life, the perfect lie, I realised after Christmas, is one which prevents you from doing that which you would ideally have done (painted, say, or written unpublishable poetry) but which, in fact, you have no wish to do. People need to feel that they have been thwarted by circumstances from pursuing the life which, had they led it, they would not have wanted; whereas the life they really want is precisely a compound of all those thwarting circumstances.

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.

Nicholson Baker talks about the way in which the most successful nonfiction books are those that can be boiled down into an argument so that everybody can wade in with an opinion without having to undergo the inconvenience of having to read the book itself. The more you can condense it, the better.

In foreign countries, when people see what Donald Trump is saying on Twitter since the election and seeing what he's saying in these calls with foreign leaders, they take everything very seriously and they take everything very literally.

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.

I've never been much drawn towards satire of any kind. I don't like that style whereby you kind of stitch people up. But the deeper thing is that I just find these people so impressive and admirable.