Unintended consequences, he thought miserably. He was angry at his anger, the way it surged up and took over.

Lina couldn't sleep at first, thinking of the old songs and what they meant. Someone, long ago, had hoped that at least a few people would survive and had wanted them to remember her city and the treasure it held, the treasure that was most valuable of all - herself, her family, and all of the generations of people who had lived in that secret place, their purpose, though they didn't know it, to make sure that human beings did not vanish from the world, no matter what happened above.

It wasn't because they had extraordinary powers, really, but because of how well they used the ordinary powers everyone had: the power of courage, the power of kindness, the powers of curiosity and knowledge.

Poppy was now almost well. She still slept more than usual, but when she wasn't sleeping she tromped around the doctor's house pulling spoons off the table and spilling cups of water and crumpling pages of books. That is, she was almost her old self.

His sympathy made tears spring to Lina's eyes. Doon looked startled for a moment, and then he took a step toward her and wrapped his arms around her. He gave her a squeeze so quick and tight that it made her cough, and then it made her laugh. 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 that she knew better than anyone now. He was her best friend.

A person who thought he knew everything simply didn’t understand how much there was to know.

You know, son, I don't think there's such a thing as an easy life. There's always going to be hard work and there will always be misfortunes we can't control, lurking out at the edges - storms, sickness, wolves. But there is such a thing as a good life and I think that we have one here.