Andrew Marr sets the cultural agenda for the week. His guests include Edward Gardner, English National Opera's musical director, who discusses the UK premiere of Finnish conductor Kaija Saariaho's L'Amour de loin. Plus philosopher Susan Neiman on her book Moral Clarity: A Guide for Grown-up Idealists, and Stephen Green, of HSBC, on his book Good Value. Justin Cartwright discusses friendship, loss and renewal in his novel To Heaven by Water.