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

Knowing how bad you could be is a great encouragement to being good.

The elevator shaft was a kind of heat sink. Hot food was cold by the time it arrived. Cold food got colder. No one knew what would happen to ice cream, but it would probably involve some rewriting of the laws of thermodynamics.

They always gives me bath salts," complained Nobby. "And bath soap and bubble bath and herbal bath lumps and tons of bath stuff and I can't think why, 'cos it's not as if I hardly ever has a bath. You'd think they'd take the hint, wouldn't you?

For an author, the nice characters aren't much fun. What you want are the screwed up characters. You know, the characters that are constantly wondering if what they are doing is the right thing, characters that are not only screwed up but are self-tapping screws. They're doing it for themselves.

There is a soak-the-rich attitude in the air, a feeling that if you have a lot of money you must have got it by some ghastly means. I can quite happily say there was never any family money. All the money we got was mine, just from writing books.

Demons were like genies or philosophy professors - if you didn't word things exactly right, they delighted in giving you absolutely accurate and completely misleading answers.