The Chronicles of Narnia she felt were upsetting to children. Poskanzer also noted Lewis presented his Christian message subtly enough as to avoid boring children with overt sermonizing. Examples include: Philip Pullman's fantasy series, "His Dark Materials", is seen as a response to "The Chronicles". Pullman is a self-described atheist who wholly rejects the spiritual themes that permeate "The Chronicles", yet his series nonetheless addresses many of the same issues and introduces some similar character types, including talking animals. In another parallel, the first books in each series – Pullman's "Northern Lights" and "The Lion, the Witch, and the Wardrobe" – both open with
The Chronicles of Narnia: The Lion, the Witch and the Wardrobe 1990s, producers Frank Marshall and Kathleen Kennedy were planning a film version. They could not find a space in Britain to shoot the film during 1996, and their plans to set the film in modern times made Douglas Gresham oppose the film, in addition to his feeling that technology had yet to catch up. Perry Moore began negotiations with the C. S. Lewis Estate in 2000. On December 7, 2001, Walden Media announced that they had acquired the rights to "The Chronicles of Narnia". The success of "Harry Potter and the Philosopher's Stone" prompted the producers to feel they could