Magritte's extraordinary late paintings When Ren Magritte reached his 40s, something unexpected happened. The painter, who had honed an iconic Surrealist style between 1926 and 1938, suddenly started making paintings that looked almost nothing like his earlier work. First he adopted an Impressionist aesthetic, borrowing the sweet, hazy palette of Pierre-Auguste Renoir--which he described as "sunlit Surrealism." Then his style shifted again, incorporating...