“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.”

“They know that people need witches; they need the unofficial people who understand the difference between right and wrong, and when right is wrong and when wrong is right. The world needs the people who work around the edges. They need the people who can deal with the little bumps and inconveniences. And little problems. After all, we are almost all human. Almost all of the time.”

“This ain’t right, you know. She’s the one who ought to rule, fair enough. And you used magic to help her this far, and that’s all right. But it stops right here. It’s up to her what happens next. You can’t make things right by magic. You can only stop making them wrong.”Mrs. Gogol pulled herself up to her full, impressive height. “Who’s you to say what I can and can’t do here?”“We’re her godmothers,” said Granny.“That’s right,” said Nanny Ogg.“We’ve got a wand, too,” said Magrat.“But you hate godmothers, Mistress Weatherwax,” said Mrs. Gogol.“We’re the other kind,” said Granny. “We’re the kind that gives people what they know they really need, not what we think they ought to want.”

“Tiffany has been apprenticing as a witch by visiting people in need with her mentor. After meeting with one particularly sad case, she tells her mentor, "It shouldn't be like this." Her mentor replies, "There isn't a way things should be. There's just what happens, and what we do.”

“Barbarism? Hah! When we kills people we do it there and then, lookin' 'em in the eye, and we'd be happy to buy 'em a drink in the next world, no harm done. I never knew a barbarian who cut up people slowly in little rooms, or tortured women to make 'em look pretty, or put poison in people's grub. Civilization? If that's civilization, you can shove it where the sun don't shine!”

“Don't you understand?" snarled Rincewind. "We are going over the Edge, godsdammit!""Can't we do anything about it?""No!""Then I can't see the sense in panicking," said Twoflower calmly.”

“Albert grunted. "Do you know what happens to lads who ask too many questions?"Mort thought for a moment."No," he said eventually, "what?"There was silence.Then Albert straightened up and said, "Damned if I know. Probably they get answers, and serve 'em right.”