Green Kirtle, breaking her spell and releasing the Prince by stamping out her magical fire (badly injuring his foot in the process, though not as much as a normal human would, since his feet are webbed). She reacts furiously and turns into a serpent, only to be killed by Rilian. Puddleglum then joins Rilian and the two children on their escape from the Underworld to Narnia. Christian elements Lewis, himself an expert on allegory, did not consider The Chronicles of Narnia allegory. He saw them as "suppositional" answering the question, "What might Christ become like, if there really were a world like Narnia and He chose to be incarnate and die and rise again in that world as He actually has done in ours?' This is not allegory at all." While not allegorical, Narnia does present significant parallels with elements from Christianity. Lewis is perhaps using Puddleglum to give a somewhat existential statement of faith when he writes, "Suppose we have only dreamed, or made up, all of those things—trees and grass and sun and moon and stars and Aslan himself. Suppose we have. Then all I can say is that, in that case, the made-up things seem a good deal more important than the real ones... We're just babies making up a game, if you're right. But four babies playing a game can make a play-world which licks your real world hollow. That's why I'm going to stand by the play-world. I'm on Aslan's side even if there isn't any Aslan to lead it. I'm going to live as like a Narnian as I can even if there isn't any Narnia... and that's a small loss if the world's as dull as you say." Lewis himself said of this passage: I suppose your philosopher son... means the chapter in which Puddleglum puts out the fire with his foot. He must thank Anselm and Descartes for it, not me. I have simply put the 'Ontological Proof' in a form suitable for children. And even that is not so remarkable a feat as you might think. You can get into children's heads a good deal which is quite beyond the Bishop of Woolwich. Lewis has, in sending the protagonists underground to a world which claims to be the only true one, also presented children with an inversion of Plato's allegory of the cave. Puddleglum, with Plato, recognizes the difference between the