"Throughout their children's novels, Lewis and Travers bring together heterogeneous collections of characters from all orders of being — humanity, mythology (Greek, Norse, Christian), the animal world (both talking and nontalking beasts), and other fictional sources (for example, nursery rhyme and fairytale figures) — and have them mingle in festival-like gatherings reminiscent of medieval carnival celebrations. ... the interaction among these disparate characters often results in the suspension of hierarchical barriers..."