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Allusions

The Harry Potter stories feature imagery and motifs drawn from Arthurian myth and fairytales. Harry's ability to draw the Sword of Gryffindor from the Sorting Hat resembles the Arthurian sword in the stone legend. His life with the Dursleys has been compared to Cinderella. Hogwarts resembles a medieval university-cum-castle with several professors who belong to an Order of Merlin; Old Professor Binns still lectures about the International Warlock Convention of 1289; and a real historical person, a 14th-century scribe, Sir Nicolas Flamel, is described as a holder of the Philosopher's Stone. Other medieval elements in Hogwarts include coats-of-arms and medieval weapons on the walls, letters written on parchment and sealed with wax, the Great Hall of Hogwarts, which is similar to the Great Hall of Camelot, the use of Latin phrases, the tents put up for Quidditch tournaments, which are similar to the "marvellous tents" put up for knightly tournaments, imaginary animals like dragons and unicorns that exist around Hogwarts, and the banners with heraldic animals for the four Houses of Hogwarts.

Many of the motifs of the Potter stories, such as the hero's quest invoking objects that confer invisibility, magical animals and trees, a forest full of danger and the recognition of a character based upon scars, are drawn from medieval French Arthurian romances. Other aspects borrowed from French Arthurian romances include the use of owls as messengers, werewolves as characters, and white deer. The American scholars Heather Arden and Kathrn Lorenz in particular argue that many aspects of the Potter stories are inspired by a 14th-century French Arthurian romance, Claris et Laris, writing of the "startling" similarities between the adventures of Potter and the knight Claris. Arden and Lorenz noted that Rowling graduated from the University of Exeter in 1986 with a degree in French literature and spent a year living in France afterwards.

Like C. S. Lewis's The Chronicles of Narnia, Harry Potter also contains Christian symbolism and allegory. The series has been viewed as a Christian moral fable in the psychomachia tradition, in which stand-ins for good and evil fight for supremacy over a person's soul. Children's literature critic Joy Farmer sees parallels between Harry and Jesus Christ. Comparing Rowling with Lewis, she argues that "magic is both authors' way of talking about spiritual reality". According to Maria Nikolajeva, Christian imagery is particularly strong in the final scenes of the series: Harry dies in self-sacrifice and Voldemort delivers an " ecce homo " speech, after which Harry is resurrected and defeats his enemy.

Rowling stated that she did not reveal Harry Potter ' s religious parallels in the beginning because doing so would have "give too much away to fans who might then see the parallels". In the final book of the series, Harry Potter and the Deathly Hallows, Rowling makes the book's Christian imagery more explicit, quoting both Matthew 6:21 and 1 Corinthians 15:26 (King James Version) when Harry visits his parents' graves. Hermione Granger teaches Harry Potter that the meaning of these verses from the Christian Bible are "living beyond death. Living after death", which Rowling states "epitomize the whole series". Rowling also exhibits Christian values in developing Albus Dumbledore as a God-like character, the divine, trusted leader of the series, guiding the long-suffering hero along his quest. In the seventh novel, Harry speaks with and questions the deceased Dumbledore much like a person of faith would talk to and question God.