Religious debates over the Harry Potter series spirit; he contrasts occult "invocational" magic (calling up spirit beings to do your bidding) with literature's common "incantational" magic (saying a set phrase to use power from an unspecified source). Indeed, says Granger, the themes of love triumphing over death and choosing what is right instead of what is easy are very compatible with Christianity. In 2000, the Dean of Canterbury Cathedral refused to allow his church to be filmed as part of Hogwarts in the "Harry Potter" film series, saying that it was unfitting for a Christian church to be used to promote pagan imagery. Gloucester Cathedral agreed to
The Magical Worlds of Harry Potter approval from Rowling, and has since received positive reviews from critics. An updated version of "The Magical Worlds of Harry Potter" was published in 2004 by Berkley Books. "The Magical Worlds of Harry Potter" explores the references to history, legends, and literature in J.K. Rowling's "Harry Potter" novels. David Colbert, the author of the book, told the "St. Louis Post-Dispatch" that the "Harry Potter" novels "are [...] literary treasure hunts for [Rowling's] readers. What seem like funny-sounding names and places and excursions into fantasy all have a basis in either history, myth or legend." He added, however, that he thinks