Sexual expression is so powerful a way of bonding with others and so devastating a way of hurting others that it can never be reduced to a mere matter of personal preferences. Sexual desires have immense capacities to order or disorder the social world. Because of this, the social meanings and expressions of sexual desire, connections, and taboos are an organizing component of human societies: Who wants whom? Who belongs with whom? Who is forbidden to whom? What do infractions mean, and what are their consequences?