James McNeill Whistler was an American artist active in the late 19th century, known for his contributions to the aesthetic movement and his innovative approach to color and composition. He is particularly famous for his painting 'Arrangement in Grey and Black No. 1', commonly known as 'Whistler's Mother', which challenged traditional portraiture by emphasizing mood and atmosphere over detailed likeness. His work often sought to express beauty and harmony rather than depict reality, aligning with the principles of the Salon des Refusés, which celebrated artistic freedom and rejected conventional standards.
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