Jerry Brotton is Senior Lecturer in Renaissance Studies at Queen Mary, University of London and director of the college's MA in Renaissance Studies. This Orient Isle: Elizabethan England and the Islamic World is out now.
Martin Kemp, an emeritus professor at the University of Oxford, is one of the foremost experts on Leonardo Da Vinci. He has recently worked on a translation and collation of the Codex Leicester and he talks Dan through Leonardo's most interesting and prescient ideas. Producer: Peter Curry