Unseen University was much bigger on the inside. Thousands of years as the leading establishment of practical magic in a world where dimensions were largely a matter of chance in any case had left it bulging in places where it shouldn't have places. There were rooms containing rooms which, if you entered them, turned out to contain the room you'd started with, which can be a problem if you are in a conga line.
Terry PratchettYou are in favour of the common people?โ said Dragon mildly. The common people?โ said Vimes. โTheyโre nothing special. Theyโre no different from the rich and powerful except theyโve got no money or power. But the law should be there to balance things up a bit. So I suppose Iโve got to be on their side.
Terry PratchettMr Lipwig, there's a lady in the hall to see you and we've thanked her for not smoking three times and she's still doing it!
Terry Pratchett