Matthew Collings will reappraise the Impressionists. The four stars are Courbet, Manet, Monet and Cezanne. In two hours their stories and their art will intertwine. Matt will unpack the principles of Impressionism - the strength of colour, the flatness, the patterning and the way in which ordinary life is pictured with startling truth - and argue that this is the best thing tha...