“Honestly Jace, don't you know better than to play with broken glass?”

“Don't tell me the moon is shining, show me the glint of light on broken glass.”

“The French are a smallish, monkey-looking bunch and not dressed any better, on average, than the citizens of Baltimore. True, you can sit outside in Paris and drink little cups of coffee, but why this is more stylish than sitting inside and drinking large glasses of whiskey I don't know.”

“Don't condemn if you see a person has a dirty glass of water, [….. ] just show them the clean glass of water that you have. When they inspect it, you won't have to say that yours is better.”

“Jace Herondale plays the piano very well.”
“And he knows it.”
“That sounds like a Herondale.” Tessa laughed.”

“More than anything." Rob persisted. "You'd crawl on your belly over broken glass for her. Easy.”

“Demons don't understand human hearts, not well. They see through a distorted glass and show you what you desire, but warped and wrong. Use that wrongness to push yourself out of the dream. Life is loss, Alexander, but it's better than this.”

“Broken glass. It's just like glitter, isn't it?”

“Don't condemn if you see a person has a dirty glass of water, just show them the clean glass of water that you have. When they inspect it, you won't have to say that yours is better."
-said by Elijah Muhammad to Malcolm X”

“"Woken up, have you?" the woman said. Her voice was like broken glass in an ice bucket.†
† Unexpectedly sharp. And cold. No one can say I don't work hard describing things for you.”