The doctrine that form, rather than color, was the most important element in painting, as it is in the works of Nicolas Poussin (French, 1593/94-1665). It highly valued draftsmanship and linear style of painting. Poussinisme was a movement in seventeenth century France which arose in reaction to Rub?nisme, which favored the coloristic brilliance and painterly style of Peter Paul Rubens (Flemish, 1577-1640). The Poussinistes were led by Charles Lebrun (French, 1619-1790), although Lebrun's work shows him emulating Rubens's style along with Poussin's. Rubens, Poussin, the Rubenistes, and the Poussinistes were all active during the Baroque period of art.(pr. poo-SA-nəzm)