“Of course, like all the informal inhabitants of the University the roaches were a little unusual, but there was something particularly unpleasant about the sound of billions of very small feet hitting the stones in perfect time.Rincewind stepped gingerly over the marching column. The Librarian jumped it.The Luggage, of course, followed them with a noise like someone tapdancing over a bag of crisps.”

“The Librarian considered matters for a while. So…a dwarf and a troll. He preferred both species to humans. For one thing, neither of them were great readers. The Librarian was, of course, very much in favor of reading in general, but readers in particular got on his nerves. There was something, well, sacrilegious about the way they kept taking books off the shelves and wearing out the words by reading them. He liked people who loved and respected books, and the best way to do that, in the Librarian’s opinion, was to leave them on the shelves where Nature intended them to be.”

“People who are rather more than six feet tall and nearly as broad across the shoulders often have uneventful journeys. People jump out at them from behind rocks then say things like, "Oh. Sorry. I thought you were someone else.”

“The figure stopped to cough long and hard, making a noise like a wall being hit repeatedly with a bag of rocks. Moist saw that it had a beard of the short bristled type that suggested that its owner had been interrupted halfway through eating a hedgehog.”

“Agnes felt that beauty was even more likely to be in the eye of the beholder if the feet of the beholder were on something solid. At ten thousand feet up, the eye of the beholder tends to water.”

“Most witches don’t believe in gods. They know that the gods exist, of course. They even deal with them occasionally. But they don’t believe in them. They know them too well. It would be like believing in the postman.”

“It was so loud and so deep, it wasn't really sound at all, just something that turned the air hard and then hit you with it.”