“Words are the litmus paper of the minds. If you find yourself in the power of someone who will use the word "commence" in cold blood, go somewhere else very quickly. But if they say "Enter", don't stop to pack.”

“Words are the litmus paper of the mind.”

“You couldn't say 'I had orders.' You couldn't say 'It's not fair.' No one was listening. There were no Words. You owned yourself. [...] Not 'Thou Shalt Not'. Say 'I Will Not'.”

“It was said that [Vetinari] would tolerate absolutely anything apart from anything that threatened the city*... [Footnote] And mime artists. It was a strange aversion, but there you are. Anyone in baggy trousers and a white face who tried to ply their art anywhere within Ankh's crumbling walls would very quickly find themselves in a a scorpion pit, on one wall of which was painted the advice: Learn The Words.”

“It is true that words have power, and one of the things they are able to do is get out of someone’s mouth before the speaker has the chance to stop them.”

“They represented what people called the "international community." And like all uses of the word "community," you were never quite sure what or who it was.”

“Bill Door found a piece of chalk in the farm's old smithy, located a piece of board among the debris, and wrote very carefully for some time. Then he wedged the board in front of the henhouse and pointed Cyril toward it.THIS YOU WILL READ, he said.Cyril peered myopically at the "Cock-A Doodle-Doo" in heavy gothic script. Somewhere in his tiny mad chicken mind a very distinct and chilly understanding formed that he'd better learn to read very, very quickly.”