'Discworld' is taking something that you know is ridiculous and treating it as if it is serious, to see if something interesting happens when you do so.

Always be wary of any helpful item that weighs less than its operating manual.

Winston Churchill said 'In war time, truth is so precious that she should always be attended by a bodyguard of lies'. Any book called The Truth should therefore have one.

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.

There isn't a way things should be. There's just what happens, and what we do.

When I am old I shall wear midnight.

Tragic heroes always moan when the gods take an interest in them, but it's the people the gods ignore who get the really tough deals