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. This professionalization is a tragedy. Hand in hand with this - and I have no idea what the causal relations are - there has been a rise in the idea of The Author, so that today one often has the impression that what's selling the book is not the book but the author.

There have been studies concluding that most people mostly know people only within their own social class - although such a conclusion would hardly surprise anyone. I think there's evidence to suggest that it's even narrower - the great majority of friends of Ivy Leaguers, for instance, are Ivy Leaguers. This narrows the pool of people who can write fiction cutting across class boundaries that's informed by their own personal experience.

The difference does not lie in the things that news does that novels do not do, but in the things that novels do that news cannot do. In other words, this basic technique of news - just one among many - is something a novel can use, but a novel can deploy a multitude of other techniques also. Novels are not bound by the rules of reportage. Far from it. They're predicated on delivering experience.

The mathematics is the odd one, odd because I'm not sure how to measure its effect. It is so fundamental to my outlook on everything and yet I'm not even sure how. It must be because in my formative years it was everything to me, the single place of beauty in my life, and of breathtaking beauty at that. I still believe that pure mathematics is the most creative thing that humanity does, though I am no longer a part of it.

Writing is indeed essential to me. I have been writing for a long time but not for publication. I'm sure there are many, many people who do the same. The rewards of writing are in the process and not the product - not just for me but for others I have met.

My own disposition is to trust the reader. Of course, there's a line between trusting the reader and expecting her to read your mind. That's where a friend or an editor comes in. A great editor will tell you straight when you've drifted into the latter territory.

I'm interested in how a person forms her beliefs, how that happens. Beliefs of all kinds make up the animating force in each of us. Without them we would be paralyzed, lifeless - the glove without the hand.