"Unanswered questions eh? Sneaky."
Vanitry fills in to those four questions that not all questions of magical theory have been answered yet, nor are ment to be answered. In particular, he mentions Professor Gaf Hilbert even lecturing on the one he had in his lecture, and uses a few anicdotes from that lecture in each of them. With that, he asks the Librarian to watch over Laynie, who's likely falling asleep in the library, while he goes to turn in his form, before he returns to the library to rest for a bit.