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A study of art history might be a good way to learn more about a culture than is possible to learn in general history classes. Most typical history courses concentrate on politics， economics， and war. But art history focuses on much more than this because art reflects not only the political values of a people， but also religious beliefs， emotions， and psychology. In addition， information about the daily activities of our ancestorsor of people very different from our owncan be provided by art. In short， art expresses the essential qualities of a time and a place， and a study of it clearly offer us a deeper understanding than can be found in most history books. In history books， objective information about the political life of a country is presented; that is， facts about politics are given， but opinions are not expressed. Art， on the other hand， is subjective： it reflects emotions and opinions. The great Spanish painter Francisco Goya was perhaps the first truly political artist. In his well-known painting The Third of May 1808， he criticized the Spanish government for its misuse of power over people. Over a hundred years later， symbolic images were used in Pablo Picassos Guernica to express the horror of war. Meanwhile， on another continent， the powerful paintings of Diego Rivera， Jose Clemente Orozco， and David Alfaro Siqueirosas well as the works of Alfredo Ramos Martinesdepicted these Mexican artists deep anger and sadness about social problems. | 
