Charles Murray attempts to quantify greatness. Is such a thing a good idea? Is it even possible? Denis Dutton believes so: “We take pleasure in watching an athlete break a record, hearing a soprano in full flight, or reading a philosopher of depth and insight. Human accomplishment is the ultimate spectator sport. Apply as much historical analysis to it as we wish, and we’ll not unlock all its mysteries. The continuous capacity of genius to surpass understanding remains a human constant.”