In this age of specialism philosophers, like other specialists, tend to take in each other's washing. Here, perhaps imprudently, I attempt to break out of this pattern. Though I am by profes- sion a philosopher, I am addressing primarily, not other philo- sophers, but cultural anthropologists, sociologists, historians of ideas, and literary and art critics. Thus, while there are chapters in this book on metaphysics and political theory, I do not ask,...