"The bar can sell us the Lost Knowledge of the Ancients in exchange for Bella's infinite counterfeit money. Bella also wants to be a sorcerer, and the Lost Knowledge of the Ancients has something to make that not hurt. I'm going to fetch Cerebro so I can transcribe the stuff so it makes any sense at all once we leave," Charlotte explains, brushing past him.
"Well. Is it true that the other two branches of magic were the result of extremely advanced sorcery?"
"Oh, excellent. Well," he says, glancing at the girls. "At least one person here wants to become a sorcerer. What is there to make that not hurt horrifically unpleasant?"
"Beautiful," he breathes, looking it over. "No wonder no one has been able to figure this out--these concepts--" he shakes his head. "Amazing."
"Well, the jargon needs to be taught, but the diagrams will make sense as soon as you're a sorcerer."
"I hadn't planned beyond casting the two spells I promised when I walked into this room, but making you a sorcerer and not educating you in any way would be only a little better than useless."
"Self-employed, and while I wouldn't describe my time as infinite I think indefinite would be accurate."
"...It's possible that it would be best to outline a reasonable curriculum and have you learn from what the Ancients knew. They possessed feats of magic unmatched in the modern world. And I've never taught before, and--my own teacher did not set a good example."
"No one knows. People find ruins of the Ancients' civilization sometimes, and Artifacts, but very rarely any writing, and if anyone has translated any of it I haven't heard of it."
"Hhhhow worried should I be about causing apocalypses with magic."