Delacroix's composition is more entirely created, while that of Seurat employs matter organized scientifically, reproducing, presenting t our eyes objects constructed by scientific means rather than by signs, coming from our feeling. As result there is in his works a positivism, a slightly inert stability, coming from his composition, which is not the result of a creation of the mind, but of a juxtaposition of the objects. It is necessary to cross this barrier to re-feel light, colored and soft, and pure, the noblest pleasure

In a letter to Camoin, Autumn 1914; as quoted in Matisse on Art, Jack Flam, University of California Press 1995 p. 275, note 5 - 1911 -1920