"And there's the sign, Ridcully," said the Dean. "you have read it, I assume. You know? The sign which says 'Do not, under any circumstances, open this door'?"
"Of course I've read it," said Ridcully. "Why d'yer think I want it opened?"
"Er ... why?" said the Lecturer in Recent Runes.
"To see why they wanted it shut, of course."*
*This exchange contains almost all you need to know about human civilization. At least, those bits of it that are not under the sea, fenced off or still smoking.
[...]
"I'm in charge here and I want a bathroom of my own," said Ridcully firmly. "And that's all there is to it, all right? I want a bathroom in time for Hogswatchnight, understand?"
And that's a problem with beginnings, of course. Sometimes, when you're dealing with occult realms that have quite a different attitude to time, you get the effect a little way before the cause.
Oh, it's good to be back with Sir Terry at the height of his powers -- I feel like sharing every other page. And of course Ridcully would have done better curbing his curiosity about that door ...