The ideal is to feel at home anywhere, everywhere.

In the '80s, the world I was living in wasn't this world of consumption. There wasn't that much to buy, really. Actually I'm still struck by that. There's not an awful lot of stuff I want. Somebody quotes Diogenes, who's walking around saying, "How many things there are in the marketplace of which Diogenes has no need." I always feel that. Except of course when you're living in Venice, California and you see all these lovely houses!

One of the reasons so many nonfiction books are so boring is because what they've done, very diligently, is fulfill the terms of their proposals. They've written up their proposal, long-form, and often what this does is then set up a sort of serial deal, where the whole book can essentially be reduced back to the size of the original proposal!

There's always something impressive when people are giving themselves to their job absolutely. The military thing - I was conscious that their routine, their way of living is so opposite to mine. In some ways their life seemed intolerable to me. But, mine would be to them, too, because this strangely laissez-faire life of mine actually comes with its obligations as well.

Have more than one idea on the go at any one time. If it's a choice between writing a book and doing nothing I will always choose the latter. It's only if I have an idea for two books that I choose one rather than the other. I ­always have to feel that I'm bunking off from something.

It's this thing that's going on all the time - aging. Paul Auster quotes the poet George Opren on growing old: "What a strange thing to happen to a little boy." Which I think is so profound.

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.