How we cite our quotes: (Part.Chapter.Paragraph)
Quote #1
"She wouldn't say, but I suspect she thinks I stayed to be a spy." (1.2.135)
It's jarring to have someone you love and trust not trust you in return. For Jace, it really shakes him to have the person who doesn't trust him be his adopted mother.
Quote #2
"Don't call me [Jonathan]. It's not my name." (1.3.16)
Names are a big deal in this universe, where people (and objects) all seem to have multiple monikers. Keep an eye on what people are called and what they like to be called to get a glimpse of their true identity.
Quote #3
[Jace] seemed to be looking past Maryse, a light flickering in his eyes, as if of reflected fire. In that moment Clary couldn't help but think that he looked very like his father. (1.3.113)
This is one of the few instances Clary identifies Jace as having anything to do with Valentine. Although it's interesting that Clary refers to "his father" instead of "their father" since they allegedly share the same parentage.