Naomi Alderman, Geoff Mulgan and Lionel Bently join Philip Dodd to explore the ever-changing meaning of Originality. Nicholas Penny, director of the National Gallery, discusses the meaning of greatness in art in front of the new exhibition - Veronese: Magnificence in Renaissance Venice. And as Simon Stephens's new play Birdland opens, the playwright talks inspirations, death and originality.