I am a badass, and I recognize that you, too, are a badass.

Do you think…"
He raised his eyebrows. "Do I think what?"
"That Valentine might have drowned?"
"Never believe the bad guy is dead until you see a body," said Simon. "That just leads to unhappiness and surprise ambushes.

Meliorn looked impassive. "Mundane humans are not permitted in the Court."
"I wish someone had mentioned that earlier," said Simon, to no one in particular. "I take it I'm just supposed to wait out here until vines start growing on me?"
Meliorn considered. "That might offer significant amusement.

Simon: I love you Isabelle Lightwood! I love you and I will not go away until you tell me you love me too!

Isabelle: Take your clothes and go!

Simon: Isabelle! Stop throwing clothes at me! Just because your a Shadowhunter and I'm a vampire doesn't mean we can never happen. Our love is forbidden like the love of a shark and a-a sharkhunter! But that's what makes it special!

Isabelle: Oh? Which one of us is the shark, Simon? Which one of us is the shark?

Robert Lightwood: What is going on? Why are you yelling outside my house?

Is standing by the window muttering about blood something he does all the time?" asked Simon.
"No," Jace said. "Sometimes he sits on the couch and does it.

The thing about the Mirror is that no one knows where it is. In fact, no one knows what it is.”
"It’s a mirror,” Simon said. “You know – reflective, glass. I’m just assuming.