The forest to either side was a black void full of wild and ancient trees, nothing like the generic carbon-dioxide suckers that decorated the city. (7.33)
Being in the city all the time made everything fake, in a way. Like the buildings and bridges held up by hoverstruts, or jumping off a rooftop with a bungee jacket on, nothing was quite real there. She was glad Shay had taken her out to the ruins. If nothing else, the mess left by the Rusties proved that things could go terribly wrong if you weren't careful. (9.49)
"But it's a trick, Tally. You've only seen pretty faces your whole life. Your parents, your teachers, everyone over sixteen. But you weren't born expecting that kind of beauty in everyone, all the time. You just got programmed into thinking anything else is ugly."
"It's not programming, it's just a natural reaction." (10.68-9)