German painter Joachim von Sandrart related how Claude Lorrain would explain, during their walks together through the fields, the causes of the different appearances of the same landscape at different hours - reflections or refractions of light, the dew, the water. Among the inspiring stories of the lives of great artists is that of Claude (1600-1682), considered by many the father of European landscape painting.A poor boy, orphaned at age 12 after many misadventures, he was apprenticed to painter, Augustin Tassi, for whom he ground colors. His assiduous work eventually led to gaining illustrious patrons among the French and Italian aristocracy. He influenced not only the Dutch artists of the mid-1600's and those who immediately came after him, but J.M.W. Turner and other great 17th and 18th century painters. About 250 paintings and over 1,000 drawings of his survive. Many are included in a major Ashmolean Museum exhibition. They represent his oeuvre over several decades, revealing the poetic beauty of his art and his views of nature of art. Included is his last painting, Ascanius and the Stag of Sylvia, owned by the Ashmolean.