He is one of the most fiercely debated artists and yet one of the most influential. Picasso collected more Renoirs than any other artist. Matisse revered him. Monet too. He was an artist that was instrumental in creating the Impressionist movement and then totally rejected it and went in a completely new direction - with extraordinary results. The Barnes Collection in Philadelphia has more Renoirs than any other gallery in the world and it's there that the search begins to tell the remarkable story of this remarkable artist.