Romance, in its earliest surviving form, was called ‘erotika pathemata’ by the Greeks - tales of erotic suffering.

There is humanist enterprise of the book, and amongst that there are many, many stories. And that is why at the end, when he says that the stories are so illuminating that they must be engraved and encased in gold and put in the palace library, the people who compile the book are telling us that this is a collection of human wisdom.

The tales are quite hard to remember and I found that going back to it between bouts of writing fiction, I was having to retrace my steps quite a lot, because the stories are very intricate and the material is elusive, and possibly with age, my memory is not as malleable as it used to be.

It seemed to me to be a parable of the exchange of goods, rather Marxist in some ways, in the new world of global forces. What the forgers do is write the brand name to try and change it, and it works! Loads of people buy fake Prada handbags, or Chanel sunglasses; they've been changed. They have been truly, really changed.

The model of the educational Kalila Wa-Dimna. These are books of instruction to rulers and humans. The stories unfold a range of human psychology, a vast range of human psychology. The Sultan is being moved from his narrow and bigoted position into a wider, more subtle, more nuanced understanding of human experiences.

The technique of the book and the technique carried by the figure of Scheherazade is one of opening the Sultan's mind. He's emblematic of the ignorant person: the ignorant, lock-in, raging man who wants to kill all he doesn't understand. The model of the book is the extraordinary, very-large, Mirror of Princes.

I was brought up a Catholic and I was quite fervent, because I was sent to a convent school.