I think the only boundaries are individual and personal. A writer should be free to write about anything he or she wants to, including the twin towers. I have made small references to 9/11 in my past two books.
I knew it was going to be enormous because of the number of people who bought the books, but, to be honest, I never thought it would be bigger than Bond. Never in a million years.
Well I've written four beauty books as well.
And I think of that again as I've written in several of my beauty books, a lot of health comes from the proper eating habits, which are something that - you know, I come from a generation that wasn't - didn't have a lot of food.
The biggest critics of my books are people who never read them.
All of my books have the potential to become movies, it's just a question of finding a studio who wants to get behind me and put up the money to make the movie.
Authors change publishers because it's like being married for a long time and suddenly you want to go out and have a wild affair! No, not seriously, sometimes the deal is more interesting with a new publisher, and other times they have more enthusiasm for your books.
I know that I am very popular in Holland, in fact I have visited Amsterdam several times to publicize my books. I have a great publisher in Holland and they have published all of my books in Dutch.
I have written 20 books, and each one is like having a baby. Writing is not easy; some people want to write books but just can't put a story together. I can put together a story that interests both me and my readers.
I don't like books, they're all fact, no heart.
As the books grew bigger and more ambitious, the situations in question sometimes became political ones, and so it became necessary to start painting in the social background on a scale which eventually became panoramic.
But at the same time, I have trouble keeping things out of books, which is why I don't write short stories because they turn into novels.
But you can try to read books at the wrong time or for the wrong reasons.
The biggest markets for my books outside the UK are France and Italy, and those are the two countries where I also have the closest personal relationships with my translators - I don't know whether that's a coincidence, or if there's something to be learned from it.
My only regret is that I signed away the world rights and in America they've been far and away my most successful books, but I never saw a cent from any of it.