James Abbott McNeill Whistler was an American artist known for his contributions to the Aesthetic Movement and his innovative approach to painting. Born in 1834 in Lowell, Massachusetts, he later moved to Europe, where he became a prominent figure in the art world, particularly in London and Paris. Whistler is best known for his famous work, Arrangement in Grey and Black No. 1, commonly referred to as Whistler's Mother. Whistler's style emphasized harmony and color, often focusing on the interplay of light and shadow. He was also a skilled etcher and contributed to the development of impressionism in the late 19th century. His artistic philosophy prioritized beauty and aesthetics over traditional subject matter, influencing many artists who followed him.