Julie Kagawa said this quote

But ... but what if I hit you?”A snort. “You’re not going to hit me.”“How do you know?” I bristled at his amused tone. “I could hit you. Even master swordsmen make mistakes. I could get a lucky shot, or you might not see me coming. I don’t want to hurt you.”He favored me with another patient look. “And how much experience do you have with swords and weapons in general?” “Um.” I glanced down at the saber in my hand. “Thirty seconds?”He smiled, that calm, irritatingly confident smirk. “You’re not going to hit me.