“Raphael snapped, "This isn't funny."
"That's why no one's laughing."
-Raphael & Jace, pg.272-”

“Death isn't funny. Then why are there so many jokes about death? Jill, with us — us humans — death is so sad that we must laugh at it.”

“Anything?" She laughed. "Like what kind of anything did you want?"
"Well, when I was five, I wanted to take a bath in spaghetti."
-Clary & Jace, pg.310-”

“Why are you such an asshat?"
"An asshat?" Jace looked as if he were about to laugh.”

“Alec shrugged "Look who's talking. 'Oh, I love her. Oh, she's my sister. Oh why, why, why--"
Jace threw a handful of dead leaves at Alec, making him splutter.
Isabelle was laughing. "You know he's right, Jace.”

“They didn't know why these things were funny. Sometimes you laugh because you've got no more room for crying. Sometimes you laugh because table manners on a beach are funny. And sometimes you laugh because you're alive, when you really shouldn't be.”

“I went to see this picture [Raphael's painting 'Madonna della Sedia' which Renoir saw in Florence in 1882] just to have a good laugh – and I found myself in front of the most wonderfully free, solid, simple, alive painting it is possible to imagine – arms and legs of real flesh, and what a touching expression of maternal tenderness.”

“Something snapped inside Maryse. “He is not a Herondale. He is a Lightwood. Jace Lightwood. He’s my son.”

“The funny thing about facing imminent death is that it really snaps everything else into perspective.”

“It's all a joke! Everything anybody ever valued or struggled for… it's all a monstrous, demented gag! So why can't you see the funny side? Why aren't you laughing?”