We live at a time when friendship has become both all and nothing at all. Already the characteristically modern relationship, it has in recent decades become the universal one: the form of connection in terms of which all others are understood, against which they are all measured, into which they have all dissolved. Romantic partners refer to each other as boyfriend and girlfriend. Spouses boast that they are each other's best friends. Parents urge their young children and beg their teenage ones to think of them as friends. Adult siblings, released from competition for parental resources that in traditional society made them anything but friends (think of Jacob and Esau), now treat one another in exactly those terms. Teachers, clergymen, and even bosses seek to mitigate and legitimate their authority by asking those they oversee to regard them as friends. We're all on a first-name basis, and when we vote for president, we ask ourselves whom we'd rather have a beer with. As the anthropologist Robert Brain has put it, we're friends with everyone now.