As a passionate believer in the democracy of reading, I don't think it's the task of the author of a book to tell the reader what it means.
The meaning of a story emerges in the meeting between the words on the page and the thoughts in the reader's mind. So when people ask me what I meant by this story, or what was the message I was trying to convey in that one, I have to explain that I'm not going to explain.
Anyway, I'm not in the message business; I'm in the "Once upon a time" business.
Philip Pullman is best known for the His Dark Materials trilogy: The Golden Compass, The Subtle Knife, and The Amber Spyglass, which has been named one of the top 100 novels of all time by Newsweek and one of the all-time greatest novels by Entertainment Weekly. In 2004, he was appointed a Commander of the Order of the British Empire. He lives in Oxford, England.
