Vincent van Gogh continues to fascinate more than a century after his death in 1890. Yet how much of what is commonly known about this world-renowned artist is accurate? Though he left thousands of works and a trove of letters, the definitive Van Gogh remains elusive. Was he a madman who painted his greatest pieces in a passionate fury or a lifelong student of art, literature and science who carefully planned each composition? Was he a loner dedicated...