appears several times in his writings, the process of elimination.33 We encounter this argumentative form, of course, in his articulation of the “trilemma” (the idea that Jesus was a liar, a lunatic, or the Lord),34 but it also shows up in his arguments for theism in Mere Christianity (where he eliminates first materialism, then pantheism, and finally dualism),35 as well as in The Lion, the Witch, and the Wardrobe, when Professor Kirk challenges the Pevensie children to logically analyze the claims