But no one may know the shape of the tale in which they move. And, perhaps, we do not truly know what sort of beast it is, either. Stories have a way of changing faces. They are unruly things, undisciplined, given to delinquency and the throwing of erasers. That is why we must close them up into thick, solid books, so they cannot get out and cause trouble.
Catherynne M. Valente, The Girl Who Circumnavigated Fairyland in a Ship of Her Own Making (via bibliophibious)