To commemorate the centennial of the death of Edgar Degas (1834-1917), through Sunday the musée d’Orsay has organized an exhibition that juxtaposes paintings, pastels, and drawings from the Impressionist artist and others with “Degas Danse Dessin,” published in 1936 by the art dealer Ambroise Vollard. Accompanied by 26 hors-textes reproductions of Degas’s graphic work, the luxury edition was written by French poet Paul Valéry (1871-1945). “For Degas,” wrote Valéry, “an oeuvre was the result of an undefined quantity of studies, and, afterwards, a series of operations. I really believe that he thought that an oeuvre should never be considered ‘finished.'” Edgar Degas (1834-1917), “Dancers walking up a stairway,” between 1886 and 1890. Oil on canvas, 39 x 89.5 cm. Paris, musée d’Orsay, RF 1979. Photo © RMN-Grand Palais (Musée d’Orsay) / Stéphane Maréchalle. Courtesy Service Presse / musée d’Orsay.