Spanish writer Antonio Muñoz Molina and philosopher A.C. Grayling meet again in Segovia after a two-year absence, that has brought with it many changes to the world, to talk to Hay Festival founder and director Peter Florence about ethics in today’s world. On the occasion of the 500th anniversary of Martin Luther’s Protestant rebellion, the three explore the huge impact of the Protestant Reformation and the way it has changed society, the arts and politics in many countries in the West.