David Shields's The Trouble with Men: Reflections on Sex, Love, Marriage, Porn, and Power is an immersion into the perils, limits, and possibilities of human intimacy. All at once a love letter to his wife, a nervy reckoning with his own fallibility, a meditation on the impact of porn on American culture, and an attempt to understand marriage (one marriage, the idea of marriage, all marriages), The Trouble with Men is exquisitely balanced...