Arthur C. Danto's essays not only critique bodies of work but reflect upon art's conceptual evolution as well, drawing for the reader a kind of "philosophical map" indicating how art and the criteria for judging it has changed over the twentieth century. In Unnatural Wonders the renowned critic finds himself at a point when contemporary art has become wholly pluralistic, even chaotic-with one medium as good as another-and when the moment for the "next thing" has already passed. So the theorist goes in search of contemporary art's most exhilarating achievements, work that bridges the...