In The Rhetoric of Purity, Mark Cheetham explores the historical and theoretical relations between early abstract painting in Europe and the notion of purity. For Gauguin, Serusier, Mondrian and Kandinsky - the pioneering abstractionists whose written and visual works Cheetham discusses in detail - purity is the crucial quality that painting must possess. Purity, however, was itself only a password for what Cheetham defines as an 'essentialist' philosophy...