Mort was already aware that love made you feel hot and cold and cruel and weak, but he hadn't realized that it could make you stupid.

The truth may be out there, but lies are inside your head.

This, milord, is my family's axe. We have owned it for almost nine hundred years, see. Of course, sometimes it needed a new blade. And sometimes it has required a new handle, new designs on the metalwork, a little refreshing of the ornamentation . . . but is this not the nine hundred-year-old axe of my family? And because it has changed gently over time, it is still a pretty good axe, y'know. Pretty good.

The truth is a fog, in which one man sees the heavenly host and the other one sees a flying elephant.

Curiosity may have killed the cat, but her's curiosity could have massacred a pride of lions.

I get it,' said the prisoner. 'Good Cop, Bad Cop, eh?' If you like.' said Vimes. 'But we're a bit short staffed here, so if I give you a cigarette would you mind kicking yourself in the teeth?

THERE'S NO JUSTICE, said Mort. JUST US.