Sometimes, when I hear people without experience of addiction blame addicts for their behaviour I feel like saying to them: "You simply don't understand - how can a child be held responsible for doing such a dreadful thing to himself?" But then again, at other times I have to acknowledge: it was done wilfully.

From time to time, as if heaven-sent to annoy, someone will ask me if I'm self-disciplined when it comes to my work. I usually look witheringly at them and snarl, 'What do you think?' I mean, how do you imagine anyone writes a quarter of a million words a year for publication?

Sometimes it occurs to me that the job of a serious cultural critic mostly consists in telling the generality of people that their opinions - on films, on books, on all manner of widgets, gadgets and even the latest electronic fidgets - simply aren't up to scratch.

Is there anything more useless than a crouton? I sometimes wake up in the small hours with a start and realise that what's roused me is an overpowering urge to visit violence on its originator.

Some people have human muses - mine is a city. I feel a startling ambivalence towards London, but for better or worse my work has come utterly to depend upon it.

When anyone starts out to do something creative - especially if it seems a little unusual - they seek approval, often from those least inclined to give it. But a creative life cannot be sustained by approval, any more than it can be destroyed by criticism - you learn this as you go on.

The high arts of literature and music stand in a curious relationship to one another, at once securely comfortable and deeply uneasy - rather like a long-term marriage.