"I found the Family Romance of King Arthur (particularly as reincarnated in T.H. White's Sword in the Stone) in the magic weapon that no one but Harry can wield, and in the gift of talking to animals, that White's Merlin gives to Arthur (Harry just does snakes). Where Mary Poppins gave the children a medicine that tasted different for each of them (each one's favorite taste), Rowling gives us Every Flavor Beans, always a surprise. The talking chess pieces from Through the Looking-Glass appear here as small pieces on a conventional board, but they talk back when you move them: "Don't send me there, can't you see his knight? Send him, we can afford to lose him." Snow White's talking mirror appears, but Rowling transforms it both with humor (the mirror over the mantelpiece shouts at Harry, "Tuck your shirt in, scruffy!" and whispers, "You're fighting a losing battle there, dear," when he attempts to plaster down his cowlick) and with something deeper: there is a mirror that shows you your heart's desire (Harry imagines his mother, "a very pretty woman ... her eyes are just like mine," and his father, whose hair "stuck up at the back, just as Harry's did"). And where both Peter Pan and Mary Poppins taught children to fly or float by thinking happy thoughts, Rowling takes the concept into a more sinister arena: Harry learns that the only way to defend himself against the Dementors, who will destroy him by assuming the form of what he most fears, is by mentally conjuring up a Patronus, "a projection of the very things that the Dementor feeds upon--hope, happiness, the desire to survive"; and Harry overpowers one Dementor by imagining life with a loving father figure who has offered to adopt him.