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 PratchettThe storm was really giving it everything it had. This was its big chance. It had spent years hanging around the provinces, putting in some useful work as a squall, building up experience, making contacts, occasionally leaping out on unsuspecting shepherds or blasting quite small oak trees. Now an opening in the weather had given it an opportunity to strut its hour, and it was building up its role in the hope of being spotted by one of the big climates.
Terry PratchettI don't hold with paddlin' with the occult," said Granny firmly. "Once you start paddlin' with the occult you start believing in spirits, and when you start believing in spirits you start believing in demons, and then before you know where you are you're believing in gods. And then you're in trouble." "But all them things exist," said Nanny Ogg. "That's no call to go around believing in them. It only encourages 'em.
Terry Pratchett