A term coined by Charles Edouard Jeanneret, known as Le Corbusier, and Amedee Ozenfant that described their intention as painters, working together in Paris, to ???purify??? Cubism back to its earliest expression and away from what they perceived as polluting decorative and illustration content. The goal was to return the expression to simple geometric lines, unmixed colors, and visual art that suggested basic form and function. Le Corbusier from Switzerland and Ozenfant of France appear to have been the primary proponents of ???Purism???, which lasted from 1918 to 1925. Their book, "Apres le Cubisme" ("After Cubism") is their manifesto on the subject. Jeanneret's dedication to "Purism" led to his becoming by the late 1920s a foremost exponent of the International Style of Architecture. Sources: Kimberly Reynolds and Richard Seddon, ???Illustrated Dictionary of Art Terms; Robert Atkins, "ART SPOKE"