Now he knew: They were real. Who’d make up a thing like this? Okay, one of them was a cheese that rolled around of its own accord, but nobody was perfect.

Aliens don't get stuck in air ducts. It's practically a well-known fact.

Some humans would do anything to see if it was possible to do it. If you put a large switch in some cave somewhere, with a sign on it saying 'End-of-the-World Switch. PLEASE DO NOT TOUCH,' the paint wouldn't even have time to dry.

Technically, the city of Ankh-Morpork is a Tyranny, which is not always the same thing as a monarchy, and in fact even the post of Tyrant has been somewhat redefined by the incumbent, Lord Vetinari, as the only form of democracy that works. Everyone is entitled to vote, unless disqualified by reason of age or not being Lord Vetinari.

Everywhere I look, I see something holy.

I don't want unnecessary violence, sergeant," said Blouse. "Right you are, sir!" said the sergeant. "Carborundum! First man comes through that door runnin', I want him nailed to the wall!" He caught the lieutenant's eye, and added: "But not too hard!

Some pirates achieved immortality by great deeds of cruelty or derring-do. Some achieved immortality by amassing great wealth. But the captain had long ago decided that he would, on the whole, prefer to achieve immortality by not dying.