“They tended to wield the huge blunt ax of the law in circumstances that required the delicate scalpel of common sense. [...] Policeman with their great big boots were not required here on a night like this. It would be a good idea to put a thumbtack under the ponderous feet of Justice.”

“The office of Master of Traditions had fallen inevitably on Ponder Stibbons, who tended to get all the jobs that required someone who thought that things should happen on time and that numbers should add up.”

“The reason that the rich were so rich, Vimes reasoned, was because they managed to spend less money.Take boots, for example. He earned thirty-eight dollars a month plus allowances. A really good pair of leather boots cost fifty dollars. But an affordable pair of boots, which were sort of OK for a season or two and then leaked like hell when the cardboard gave out, cost about ten dollars. Those were the kind of boots Vimes always bought, and wore until the soles were so thin that he could tell where he was in Ankh-Morpork on a foggy night by the feel of the cobbles.But the thing was that good boots lasted for years and years. A man who could afford fifty dollars had a pair of boots that'd still be keeping his feet dry in ten years' time, while the poor man who could only afford cheap boots would have spent a hundred dollars on boots in the same time and would still have wet feet.This was the Captain Samuel Vimes 'Boots' theory of socioeconomic unfairness.”

“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.”

“His mind worked fast, flying in emergency supplies of common sense, as human minds do, to construct a huge anchor in sanity and prove that what happened hadn't really happened and, if it had happened, hadn't happened much.”

“He helped the Librarian up. There was a red glow in the ape's eyes. It had tried to steal his books. This was probably the best proof any wizard could require that the trolleys were brainless.”

“Human beings have always preferred common sense to logic.”