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

Mrs. Murdo, walkind even more briskly to keep her spirits up, was crossing Harken Square when something fell to the pavement just in front of her with a terrific thump. How extraordinary, she thought, bending to pick it up. It was sort of a bundle. She began to untie it.

What could be more interesting than thinking of mysterious happenings, finding the answers to intriguing questions, and making up new worlds?

Maybe there was no happily ever after [...] but there was happiness sometimes and she had it now, doing what she knew she was born for.

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--

The trouble with anger is, it gets hold of you. And then you aren't the master of yourself anymore. Anger is. And when anger is the boss, you get unintended consequences.

Doon was touched. Kenny looked like a tiny little wisp, but there was something strong inside him. --People of Sparks--