M.C. Escher - "Drawing Hands" - 1948, lithograph.

M.C. Escher was a Dutch graphic artist, noted for his distinctive prints depicting intricate interlocking patterns and optical illusions. He was especially accomplished in lithography and wood engraving. While Escher’s early work consists mainly of landscapes and townscapes, beginning in 1936 his work became increasingly more concerned with scenes of his own creation, especially with the repeating patterns and spatial illusions for which he is best known. The "Drawing Hands" are a beautiful presentation of the hands of an artist--our hands being one of our most important tools.