A medievalist and defender of the notion of Christian philosophy, Etienne Gilson had a lifelong interest in the philosophy of art. He questioned whether what is reproduced as art in contemporary society is art at all. This is not a simple issue. A cheap version of a novel is still a novel. A picture of a statue is not a statue, nor indeed is a photograph of a painting a painting. Recorded music has particular complications. The organizer of an industrial...