“The Tezuman Empire in the jungle valleys of central Klatch is known for it organic market gardens, its exquisite craftsmanship in obsidian, feathers and jade, and its mass human sacrifices in honor of Quezovercoatl, the Feathered Boa, god of mass human sacrifices.”

“You always knew where you stood with Quezovercoatl. It was generally with a lot of people on top of a great stepped pyramid with someone in an elegant feathered headdress chipping an exquisite obsidian knife for your very own personal use.”

“Just erotic. Nothing kinky. It's the difference between using a feather and using a chicken.”

“A number of religions in Ankh-Morpork still practiced human sacrifice, except that they didn't really need to practice any more because they had got so good at it.”

“The figures looked more or less human. And they were engaged in religion. You could tell by the knives (it's not murder if you do it for a god).”

“It is a popular fact that nine-tenths of the brain is not used and, like most popular facts, it is wrong. Not even the most stupid Creator would go to the trouble of making the human head carry around several pounds of unnecessary gray goo if its only real purpose was, for example, to serve as a delicacy for certain remote tribesmen in unexplored valleys.”

“Whoever had created humanity had left in a major design flaw.It was its tendency to bend at the knees.”