The store of fairy tales, that blue chamber where stories lie waiting to be rediscovered, holds out the promise of just those creative enchantments, not only for its own characters caught in its own plotlines; it offers magical metamorphoses to the one who opens the door, who passes on what was found there, and to those who hear what the storyteller brings. The faculty of wonder, like curiosity can make things happen; it is time for wishful thinking to have its due.

If you want a good handbag and glasses, it's hard to get something without the brand name on it because it's so important to have the charmed inscription. The only way you do it... This handbag was the only one in the shop without a charmed inscription. It's just an ordinary bag. I went into the department store in Sloane Square, because I needed a new bag, because my old one lost its handles. Then I found this one, and I said "Why is it so cheap?" and the seller said, "Because it doesn't have a name!"

For example, John Law's Mississippi Company venture printed shares, and the money had gone up in smoke when it had been inscribed objects. The inscription made it magic and changed its meaning. That's how objects become charmed in The Arabian Nights, and they are often originally ordinary objects. The carpet is an ordinary, paltry object. The lamp is a rusty old lamp, and the bottles jinns are imprisoned within are old bottles. They are changed by the magic and the jinn's presence, and the jinn's presence is often embodied in the seal or inscription.

The French Revolution printed money because they didn't have any, so they just printed it, and this was a revolutionary step which of course we are still reaping the huge consequences of today. It struck me that this was beginning to happen...there had been scandals where shares had been printed.

If you want to learn about a culture, you look at what buildings the people lived in but you also want to know about their cosmos.

Although the stories are very present in my book, and very present in my mind, what I was most interested in was the question of why it had attracted such a following in the 18th Century. It's less mysterious that it attracted a following in the Romantic period, and in the 19th Century, but the early 18th Century when the Rationalists fell in love with it...that was mysterious. What I wanted to look at was the forms of enchantment.

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.