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.

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

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!

One's happiness is very largely a question of state of mind rather than the world you are looking at.

I published so many books, which, for years, didn't get published here in America, at all - and which barely got any attention in England. So it wasn't going to take much to make me feel suddenly famous. So - yeah - after 20 years, I'm an overnight success.

I guess that as life is speeded up and our capacity for concentration is being nibbled away at by all the obvious things, that leads us actually to be more susceptible to boredom.

If Donald Trump thinks that just by being unpredictable that somehow he can have an impact, but not necessarily commit himself to certain things, that's not the way it is going to be read in foreign capitals. Foreign governments are going to take these things very literally and very directly.