“There’s more to honesty than … than an arrangement of words. They say faeries can’t lie, but you lie in your intentions, your attitude, your demeanor —”
“And you don't care that I'm your brother," he said. "I know how you felt about Jace, even when you thought he was your brother. You can't lie to me.""Jace is better than you.""No one's better than me.”
“What I actually want to call you is a hell of a lot more unprintable than your name”
“Though Alec had never seen the occupants of the first floor loft, they seemed to be engaged in a tempestuous romance. Once there had been a bunch of someone's belongings strewn all over the landing with a note attached to a jacket lapel addressed to "A lying liar who lies." Right now there was a bouquet of flowers taped to the door with a card tucked among the blooms that read I'M SORRY. That was the thing about New York: you always knew more about your neighbors' business than you wanted to.”
“It's always better to live the truth than to live a lie.”
“Funny isn’t it?” said Sebastian. “The lies good people tell. He’ll probably make you eggs every day for the rest of your life now, and you’ll choke them down because you can’t tell him you don’t like them.” Clary thought of the Seelie Queen. “Love makes liars of us all?”
“Look, it's easy to outsmart a werewolf or a vampire," Jace said. "They're no smarter than anyone else. But faeries live for hundreds of years and they're as cunning as snakes. They can't lie, but they love to engage in creative truth-telling. They'll find out whatever it is you want most in the world and give it to you—with a sting in the tail of the gift that will make you regret you ever wanted it in the first place." He sighed. "They're not really about helping people. More about harm disguised as help.”