"From one of our most astute art critics, an impassioned and elegant book that questions the demand for art's political relevance or its need to deliver a message, and insists on its power to take us out of the everyday world, and its most important role: to excite, disturb, inspire or unsettle us. As more and more critics and enthusiasts insist that art needs to promote a particular idea or message, be it political or social, as a brand, a means...