She realized all at once that Doon, thin, dark eyed Doon, with his troublesome temper and his terrible brown jacket, and his good heart---- was the person she knew better than anyone now. He was her best friend.
--City of Ember--

Now Doon seemed to care for his new friends more than he did for her. Every time she thought about him she felt a thud of pain, like a bruised place inside her.

When someone has been mean to you, why would you want to be good to them?' 'You wouldn't want to. That's what makes it hard. You do it anyway. Being good is hard. Much harder than being bad.

People didn't make life, so they can't destroy it. Even if we were to wipe out every bit of life in the world, we can't touch the place life comes from. Whatever made the plants and animals and people spring up in the first place will always be there, and life will spring up again.

And I’ve got admirers. Okay, probably drunken geeks with nothing better to do than scroll through a thousand videos to check out cleavage shots in slow-mo, but still.

A darkness different from Ember's, but just as frightening...