I thought physics could be done to the glory of God, till I saw there wasn’t any God at all and that physics was more interesting anyway. The Christian religion is a very powerful and convincing mistake, that’s all.

On a cold, fretful afternoon in early October, 1872, a hansom cab drew up outside the offices of Lockhart and Selby, Shipping Agents, in the financial heart of London, and a young girl got out and paid the driver. She was a person of sixteen or so--alone, and uncommonly pretty. She was slender and pale, and dressed in mourning, with a black bonnet under which she tucked back a straying twist of blond hair that the wind had teased loose. She had unusually dark brown eyes for one so fair. Her name was Sally Lockhart; and within fifteen minutes, she was going to kill a man.

I've been surprised by how little criticism I've got. Harry Potter's been taking all the flak. I'm a great fan of J.K. Rowling, but the people - mainly from America's Bible Belt - who complain that Harry Potter promotes Satanism or witchcraft obviously haven't got enough in their lives. Meanwhile, I've been flying under the radar, saying things that are far more subversive than anything poor old Harry has said. My books are about killing God.

I write almost always in the third person, and I don't think the narrator is male or female anyway. They're both, and young and old, and wise and silly, and sceptical and credulous, and innocent and experienced, all at once. Narrators are not even human - they're sprites.

I wanted the chance to look again at very famous stories and see what made them work well, whether there were any ways in which they could be improved. Because the great thing about fairy tales and folk tales is that there is no authentic text.

Lonely? I don't know. They tell me this is cold. I don't know what cold is, because I don't freeze. So I don't know what lonely means either. Bears are made to be solitary.

The fact was that where Will is concerned, she was developing a new kind of sense, as if he were simply more in focus than anyone she'd known before. Everything about him was clear and close and immediate.