“Look at the masterpiece, and not at the frame — and not at the faces of other people looking at the frame.” - Vladimir Nabokov in his lectures on Russian literature, opposing the primary type of academic and popular criticism: what we might call the demographic-reactive type. The overwhelming majority of opinion derives less from any internal response to a work of art (or political idea or cultural trend) than from what sorts of reactions we imagine on other faces looking at the frame,...