When a big kid hits a little kid on the playground, we call him a bully; five years later he punches a woman for her wallet and is called a mugger; later still, when he slugs a fellow worker who insults him, he is called a troublemaker, but when he becomes a father and hits his tiresome, disobedient or disrespectful child, we call him a disciplinarian. Why is this rung on a ladder of interpersonal violence regarded so differently from the rest? — Penelope Leach