Third things are essential to marriages, objects or practices or habits or arts or institutions or games or human beings that provide a site of joint rapture or contentment. Each member of a couple is separate; the two come together in double attention. Lovemaking is not a third thing but two-in-one. John Keats can be a third thing, or the Boston Symphony Orchestra, or Dutch interiors, or Monopoly. For many couples, children are a third thing.”
