Subject matter consists of representational arts in the broadest sense, architecture, sculpture, painting, and other man-made objects with no limits as to time, place, or cultural environment.

With this widely acclaimed work, Michael Fried revised the way in which eighteenth-century French painting and criticism are viewed and understood. Analyzing paintings produced between 1753 and 1781 and the comments of a number of critics who wrote about them, especially Dennis Diderot, Fried discovers a new emphasis in the art of the time, based not on subject matter or style but on values and effects.