As an artist, Edgar Degas (1834-1917) defies easy description. Allied with the French impressionists through his commitment to portraying modern life, he also took an independent course, preferring line over color and the visible brushstroke, and working in a studio instead of out-of-doors. He is perhaps best known as a painter, but his most widely known work is a sculpture, Little Dancer Aged Fourteen. Executed in wax, near life-sized,...