Since no one has ever bothered to explain the importance of learning to Milo, he regards school as the biggest waste of time in his life. Juster intended that the book speak to the importance of learning to love learning. Teaching methods that might bore children, by memorization for example, are mocked in the book, as in the case of the Spelling Bee. Like the Bee, the Humbug's insult to his fellow insect goes over Milo's head, but possibly not the reader's: "A slavish concern for the composition of words is the sign of a bankrupt intellect." According to Mary Liston in her journal article on law in fantasy realms, ""The Phantom Tollbooth" concerns the difference between education and wisdom and what processes are conducive to synthesizing both, so as to encourage an attitude of engagement, alertness, and responsibility within an increasingly autonomous individual."