“Regret is such a pointless emotion, don't you agree?”

“No," Jace agreed. "We don't fly. We break and enter.”

“Pointless, needless suffering and pain? I don’t suppose it would help if I told you that was the way life is. The good suffer, the evil flourish, and all that is mortal passes away.”

“Does that mean you agree?"He groaned. "I think it means you crushed my spirit and beat me down.""Fantastic.”

“I can only assume," said Jace, "that mortal emotions amuse you because you have none of your own.”

“But how do they get inside?""They fly," Jace said, and indicated the upper floors of the building.[...]"We don't fly," Clary felt impelled to point out."No," Jace agreed. "We don't fly. We break and enter." He started across the street toward the hotel."Flying sounds like more fun," Clary said, hurrying to catch up with him."Right now everything sounds like more fun.”

“Well, I hate to tell you this," she said, "but your friend is an asshole.""He's not my friend," said Simon. "And I couldn't agree with you more, actually."-Maia & Simon about Jace, pg.49-”