“Will: Have you ever seen what happens to someone with demon pox? First it lies dormant. One begins to turn yellow and green. Then the swelling sets in -
Jem: THERE IS NO SUCH THING AS DEMON POX.”

“Astriola. That IS demon pox. You had evidence that demon pox existed and you didnt mention it to me! Et tu, Brute!' He rolled up the paper and hit Jem over the head with it.”

“Demon pox,' said Will with the satisfaction of the truly vindicated.”

“Forsooth, I no longer toil in vain,
To prove that demon pox warps the brain.
So though 'ti pity, it's not in vain
That the pox-ridden worm was slain:
For to believe in me, you all must deign.”

“Gabriel’s green eyes sought Will. “It was demon pox, wasn’t it? You know all about it, don’t you? Aren’t you some sort of expert?”
“Well, you needn’t act as if I invented it,” said Will.”

“Will!" Charlotte threw up her hands. "Why didn't you say so?"
"You know, the books on demon pox are in the library," Will said with an injured tone. "I wasn't preventing anyone from reading them”

“What happens in the demon realms stays in the demon realms,” said Jace.”

“Their grandchildren had reminded Will of the song about demon pox he had taught them- when they were much too young, Tessa had always thought- and that they had all memorized. They sang it all together and out of tune, scandalizing Sophie.”

“Ah, you fight like a sissy demon. (Takeshi)
Sissy demon? Have you ever met a sissy demon? (Savitar)
I killed three this morning. (Takeshi)”

“Aimee-"If someone's possessed by a demon, how do you get the demon out?"
Xedrix-"Call a priest.”