There's a lot of science in it, and as Slartibartfast [in The Hitchhiker's Guide to the Galaxy] said: 'I am a great fan of science, but I cannot do a quadratic equation.' I've never, ever been able to do one. I remember one occasion at Warwick University, when Jack and Ian were at their wits' end because I couldn't get it. I felt totally ashamed.

You are in favour of the common people?” said Dragon mildly. The common people?” said Vimes. “They’re nothing special. They’re no different from the rich and powerful except they’ve got no money or power. But the law should be there to balance things up a bit. So I suppose I’ve got to be on their side.

The Chain Letter to the Ephebians. Forget Your Gods. Be Subjugated. Learn to Fear. Do not break the chain -- the last people who did woke up one morning to find fifty thousand armed men on their lawn.

'Don't think of it as dying,' said Death. 'Just think of it as leaving early to avoid the rush.'

Ponder just let it happen. It's because their minds are so often involved with deep and problematic matters, he told himself, that their mouths are allowed to wander around making a nuisance of themselves.

As large as worlds. As old as Time. As patient as a brick.

It's tough at the top. It's tough at the bottom. But in between you could use them for horse-shoes.