Discworld: Guards! Guards!

"Some humans would do anything for money."

"The best lies are the ones people want to believe."

"A lie can run around the world before the truth has got its boots on."

"The reason that the poor were so poor was because they were poor."

"You can't have everything. Where would you put it?"

"In the dark, all colours are black."

"Trolls are stupid. This is considered to be a scientific fact."

"Dwarves are traditionally good at counting things."

"A good captain leads from the front."

"There's no business like dragon business."

"Dragons are not real, and that's the important thing."

"The world is full of people who want to explain things to you."

"Humans are the only things that think they're thinking."

"It never has been possible to stop the lower classes from dying."

"I'm not very good at the thinking, I'm better at the doing."

"You shouldn't judge a book by its cover, or a guard by their size."

"All right. I'll do it. But I won't like it."

"The reason that the rich were so rich, Vimes reasoned, was because they managed to spend less money. That made them richer."

"Multiple exclamation marks are a sure sign of a diseased mind."

"It is often better to light a flamethrower than curse the darkness, although the results are much the same."