That's what's so stupid about the whole magic thing, you know. You spend twenty years learning the spell that makes nude virgins appear in your bedroom, and then you're so poisoned by quicksilver fumes and half-blind from reading old grimoires that you can't remember what happens next.

Using a metaphor in front of a man as unimaginative as Ridcully was like a red flag to a bu... was like putting something very annoying in front of someone who was annoyed by it.

Vimes stalked gloomily through the crowded streets, feeling like the only pickled onion in a fruit salad.

It is possible to live well with dementia and write best-sellers 'like wot I do.

It is important that we know where we come from, because if you do not know where you come from, then you don't know where you are, and if you don't know where you are, you don't know where you're going. And if you don't know where you're going, you're probably going wrong.

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.

Questions don't have to make sense, Vincent," said Miss Susan. "But answers do.