The Phantom Tollbooth” is not just a manifesto for learning; it is a manifesto for the liberal arts, for a liberal education, and even for the liberal-arts college. What Milo discovers is that math and literature, Dictionopolis and Digitopolis, should assume their places not under the pentagon of Purpose and Power but under the presidency of Rhyme and Reason. Learning isn’t a set of things that we know but a world that we enter.