As the book became acclaimed as a modern classic, it began to be used in the classroom, and Juster corresponded with some teachers. After the book's readers attained adulthood, they wrote of its influence on them. Novelist Cathleen Schine recalled, "it was as if someone had turned on the lights. The concepts of irony, of double entendre, of words as play, of the pleasure and inevitability of intellectual absurdity, were suddenly accessible to me. They made sense to me in an extremely personal way." British fantasy writer Diana Wynne Jones read her copy so often it fell apart: "it didn't occur to us that it might be about something. It struck us as a little like "The Wizard of Oz", only better." One reader, signing himself "Milo", wrote to "Rolling Stone" in 1970, "If you want to get freaked out of your undernourished head, pick up "The Phantom Tollbooth", by Norton Juster. They tell you it's a kids' book, but take my word for it, no one who reads it is ever the same. No hype."