I don't want you to think that I'm being willfully obtuse, but I've never really grasped how point of view could be regarded as a matter of choice independent of story. Point of view is intimately interwoven into the story that you want to tell - it is an aspect of it.

The mathematical tilt remains basic to my epistemological perspective, my howling plea in the still of night for epistemic humility. Mathematics gave me that as, also, did the difficulty I had in talking to my parents. How proofs are conceived is unfathomable. Clearly, there are certain conditions in which the revelation takes place.

The twentieth century saw a professionalization of fiction writing, particularly in its second half and particularly in the Anglo-Saxon world - not so much mainland Europe, for example.

Listening to people discussing a novel can be very interesting, if you've read whatever novel is being discussed. No one, it seems, ever says, "This is a great book but I didn't like it." Taking a little time to think about why this might be has been very liberating.

I had a tough childhood, yes. I was born in rural Bangladesh to parents who had had no education beyond high school. We moved to the UK where I grew up in poverty, in some of the worst conditions in a developed economy, before moving to the projects - heaven - and I went to unremarkable schools before going to university. My father was a bus conductor first and then a waiter, and my mother a seamstress.

My parents were entirely unpredictable and what they said very unreliable, which meant I became very attuned to the range of other signals human beings give out - body language or what Freud graphically called the "betrayal that oozes out of him at every pore," betrayal, that is, of what they really mean. I have that to this day, and it makes conversation exhausting because I'm listening not just to the words of the person in front of me but also to their body. It's as if there are two radio stations on at the same time.

One problem I have with talking about myself in the context of class divisiveness is that I can be - and indeed have been - used by others to demonstrate its absence and that it's only a matter of hard work to move upward socially. After all, how could I complain about anything, if the retort is: "But look where you got to? It can't be all that bad." But this is nonsense as an argument quite aside from its empirical absurdity because no single case can invalidate a statistical claim.