Thomas Eakins was an American realist painter, photographer, sculptor, and fine arts educator. He is widely acknowledged to be one of the most important artists in American art history. He painted several hundred portraits, usually of friends, family members, or prominent people in the arts, sciences, medicine, and clergy. Taken en masse, the portraits offer an overview of the intellectual life of Philadelphia in the late 19th and early 20th centuries; individually, they are incisive depictions of thinking persons. In addition, Eakins produced a number of large paintings which brought the portrait out of the drawing room and into the offices, streets, parks, rivers, arenas, and surgical amphitheaters of his city. Since his death, Eakins has been celebrated by American art historians as "the strongest, most profound realist in nineteenth- and early-twentieth-century American art".