Melvyn Bragg assesses the scientific legacy of the 18th century German poet and thinker Goethe with Nicholas Boyle, Reader in German Literary and Intellectual History, Magdalene College, Cambridge, and biographer of Goethe; Simon Schaffer, Reader in the History and Philosophy of Science, Cambridge University and Fellow of Darwin College, Cambridge. (BBC Radio 4, 9:02AM Thu, February 10, 2000)