There's plenty of sense in nonsense sometimes, if you wish to look for it.

Charlotte leaned forward across the table. “The Dark Sisters never mentioned what use they intended to make of your abilities, did they?” “You know about the Magister.” Tessa said. “They said they were preparing me for him.” “For him to do what?” Will asked. “Eat you for dinner?” Tessa shook her head. “To – to marry me, they said.” “To marry you?” Jessamine was openly scornful. “That’s ridiculous. They were probably going to blood sacrifice you and didn’t want you to panic.” (page 78)

To destroy the enemy it can be necessary to understand him.

Magnus had a list of favored traits in a partner-black hair, blue eyes, honest.

You might want to get up," he said. "Everyone will be here quite soon to rescue you, and you may prefer to have clothes on when they arrive." He shrugged. "I would, at any rate, but then, I am well known to be remarkably shy.

A lot of people feel like urban fantasy is a shortcut that gets you around world-building, because it's set "in the real world." But it doesn't really work that way, as I found out. You have to come up with just as consistent an internal cosmology and magic system as you would if you were writing high fantasy.

Jem shook his head. "You bit de Quincey" he said. "You fool. He's a VAMPIRE" "I had no choice" said Will " He was choking me" "I know" Jem said. " But really Will, AGAIN?