The Phantom Tollbooth
"Has Azaz agreed to it?" the Mathemagician inquired.
"Yes, sir," the dog assured him.
"THEN I DON'T," he thundered again, "for since they've been banished, we've never agreed on anything – and we never will." (16.44-9)
After what seemed like days, he [the Humbug] had dug a hole scarcely large enough for his thumb. Tock shuffled steadily back and forth with the dropper in his teeth, but the full well was still almost as full as when he began, and Milo's new pile of sand was hardly a pile at all.
"How very strange," said Milo, without stopping for a moment. "I've been working steadily all this time, and I don't feel the slightest bit tired or hungry. I could go right on the same way forever."
"Perhaps you will," the man agreed. (17.1-3)
"Well, I hope you didn't expect to get anywhere by listening to me," said the voice gleefully.
"We'll never get out of here," the Humbug moaned, looking at the steep, smooth sides of the pit.
"That is quite an accurate evaluation of the situation," said the voice coldly. (17.35-37)