I suspect that parents argue more aggressively in front of their children because children are a mute, ever-present reminder of life’s stakes. A fight about a husband’s lack of professional initiative or a wife’s harsh tone with her daughter is no longer just a fight about work habits or disciplinary styles. It’s a fight about the future—about what kind of role models they are, about what kind of people they aspire to be, about who and what they want their children to become.

