I was watching an episode of Doctor Who last weekend, ‘Tooth and Claw’ from Season 2, starring David Tennant.
The story involved the Doctor and Rose trying to defeat a werewolf and protect Queen Victoria. At one point in the chase they are hiding in the Library of Torchwood Estate, and the werewolf is unable to enter, as the walls of the library have been protected.
The captives look around the library for a weapon to fight the wolf but despair of finding something to save themselves. Then the Doctor declares, “We are in a library, what other weapon do you need?” and they begin to search through the books for clues to the wolf’s origins and vulnerabilities.
“Hurrah!” said I, there on the couch. What other weapon do you need, indeed! Knowledge is Power!