"I think that sick people in Ankh-Morpork generally go to a vet. It's generally a better bet. There's more pressure on a vet to get it right. People say "it was god's will" when granny dies, but they get angry when they lose a cow."

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Sergeant Colon of the Ankh-Morpork City Guard was on duty. He was guarding the Brass Bridge, the main link between Ankh and Morpork. From theft. When it came to crime prevention, Sergeant Colon found it safest to think big.

— Terry Pratchett