“People, Reacher was certain about. Dogs were different. People had freedom of choice. If a man or a woman ran snarling toward him, they did so because they chose to. They were asking for whatever they got. His response was their problem. But dogs were different. No free will. Easily misled. It raised an ethical problem. Shooting a dog because it had been induced to do something unwise was not the sort of thing Reacher wanted to do.”

“I cared about dogs because they were faithful and honest, and some dogs were cleverer and more interesting than some people.”

“These were the sorts of notions that had been raised in all my classes, and we had chased them round and round like dogs maddened by their tails.”

“It would perhaps not be amiss to point out that he had always tried to be a good dog. He had tried to do all the things his MAN and his WOMAN, and most of all his BOY, had asked or expected of him. He would have died for them, if that had been required. He had never wanted to kill anybody. He had been struck by something, possibly destiny, or fate, or only a degenerative nerve disease called rabies. Free will was not a factor.”

“But with dogs, we do have "bad dog." Bad dog exists. "Bad dog! Bad dog! Stole a biscuit, bad dog!" The dog is saying, "Who are you to judge me? You human beings who’ve had genocide, war against people of different creeds, colors, religions, and I stole a biscuit?! Is that a crime? People of the world!""Well, if you put it that way, I think you’ve got a point. Have another biscuit, sorry.”

“...men, groping in the Arctic darkness, had found a yellow metal, and because steamship and transportation companies were booming the find, thousands of men were rushing into the Northland. These men wanted dogs, and the dogs they wanted were heavy dogs, with strong muscles by which to toil, and furry coats to protect them from the frost.”