“I sometimes feel as though we’ve stumbled on a flaw in the system, don’t you? A short circuit? A category error? A strange loop? Is it possible that magic is knowledge that would be better off forsworn? Tell me this: Can a man who can cast a spell ever really grow up?”

He paused. No one answered. What the hell would they say? It was a little late to be scolding them now that they’d already completed their magical education.

“I have a little theory that I’d like to air here, if I may. What is it that you think makes you magicians?” More silence. Fogg was well into rhetorical-question territory now anyway. He spoke more softly. “Is it because you are intelligent? Is it because you are brave and good? Is it because you’re special?

“Maybe. Who knows. But I’ll tell you something: I think you’re magicians because you’re unhappy. A magician is strong because he feels pain. He feels the difference between what the world is and what he would make of it. Or what did you think that stuff in your chest was? A magician is strong because he hurts more than others. His wound is his strength.

“Most people carry that pain around inside them their whole lives, until they kill the pain by other means, or until it kills them. But you, my friends, you found another way: a way to use the pain. To burn it as fuel, for light and warmth. You have learned to break the world that has tried to break you.”

Quentin’s attention wandered to the tiny glimmery points of light here and there on the curved ceiling above them, pricking out the shapes of constellations he didn’t recognize, as if they were on another planet, seeing the stars from an alien angle. Someone cleared his throat.

Fogg went on.

“But just in case that’s not enough, each one of you will leave this room tonight with an insurance policy: a pentagram tattooed on your back. Five-pointed star, nicely decorative, plus it acts as a holding cell for a demon, a small but rather vicious little fellow. Cacodemon, technically.

“They’re tough little scrappers, skin like iron. In fact, I think they may be made of iron. I’ll give you each a password that sets him free. Speak the password and he’ll pop out and fight for you till he’s dead or till whoever’s giving you trouble is.”

Fogg clapped his hands on his knees and looked at them as if he’d just told them they’d all be receiving a year’s supply of attractive and useful Brakebills stationery. Georgia put up her hand tentatively.

“Is . . . is this optional? I mean, is anybody else besides me disturbed by the idea of having an angry demon, you know, trapped inside their skin?”