“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.”

“The Librarian was not familiar with love, which had always struck him as a bit ethereal and soppy, but kindness, on the other hand, was practical. You knew where you were with kindness, especially if you were holding a pie it had just given you.”

“Other people say: hold on, if he's carrying the entire universe in a sack, right, that means he's carrying himself and the sack inside the sack, because the universe contains everything. Including him. And the sack, of course. Which contains him and the sack already. As it were.To which the reply is: well?”

“That bit where that lad sprang backwards right across the room with them axes in his hands was impressive, though.""Yeah.""You didn't ought to have stuck your sword out like that, I thought.""He's learned an important lesson.""It won't do him much good now where he's gone.”

“Unseen University had never admitted women, muttering something about problems with the plumbing, but the real reason was an unspoken dread that if women were allowed to mess around with magic they would probably be embarrassingly good at it…”

“All assassins had a full-length mirror in their rooms, because it would be a terrible insult to anyone to kill them when you were badly dressed.”

“They were small, brightly coloured, happy little creatures who secreted some of the nastiest toxins in the world, which is why the job of looking after the large vivarium where they happily passed their days was given to first-year students, on the basis that if they got things wrong there wouldn't be too much education wasted.”