The Phantom Tollbooth
"What a curious idea," said the Mathemagician, raising his staff over his head and scrubbing the rubber end back and forth several times on the ceiling. "The next thing you'll have us believe is that you only sleep when you're tired." And by the time he'd finished the sentence, the cavern, the miners, and the Dodecahedron had vanished, leaving just the four of them standing in the Mathemagician's workshop.
"I often find," he casually explained to his dazed visitors, "that the best way to get from one place to another is to erase everything and begin again. Please make yourself at home." (15.31-32)
"Just follow that line forever," said the Mathemagician, "and when you reach the end, turn left. There you'll find the land of Infinity, where the tallest, the shortest, the biggest, the smallest, and the most and the least of everything are kept." (15.72)
Higher and higher they climbed, in search of the castle and the two banished princesses – from one crest to the next, from jagged rock to jagged rock, up frightful crumbling cliffs and along desperately narrow ledges where a single misstep meant only good-by. (18.1)