“But you ain't part of it, are you?" said Granny conversationally. "You try, but you always find yourself watchin' yourself watchin' people, eh? Never quite believin' anything? Thinkin' the wrong thoughts?”

“And what do you really do?" asked Tiffany. The thin witch hesitated for a moment, and then: "We look to ... the edges," said Mistress Weatherwax. "There's a lot of edges, more than people know. Between life and death, this world and the next, night and day, right and wrong ... an' they need watchin'. We watch 'em, we guard the sum of things. And we never ask for any reward. That's important.”

“I get it,' said the prisoner. 'Good Cop, Bad Cop, eh?'If you like.' said Vimes. 'But we're a bit short staffed here, so if I give you a cigarette would you mind kicking yourself in the teeth?”

“Find the story, Granny Weatherwax always said. She believed that the world was full of story shapes. If you let them, they controlled you. But if you studied them, if you found out about them... you could use them, you could change them.”

“Granny bit her lip. She was never quite certain about children, thinking of them - when she thought about them at all – as coming somewhere between animals and people. She understood babies. You put milk in one end and kept the other as clean as possible. Adults were even easier, because they did the feeding and cleaning themselves. But in between was a world of experience that she had never really inquired about. As far as she was aware, you just tried to stop them catching anything fatal and hoped that it would all turn out all right.”

“I believe you find life such a problem because you think there are good people and bad people. You're wrong, of course. There are, always and only, the bad people, but some of them are on opposite sides.”

“Never build a dungeon you wouldn't be happy to spend the night in yourself. The world would be a happier place if more people remembered that.”