Speakers Dr Tristram Hunt broadcaster; lecturer in modern British history, Queen Mary, University of London; author, The Frock-Coated Communist: the revolutionary life of Friedrich Engels
Luke Johnson chairman, Channel 4; chairman/owner, Giraffe and Patisserie Valerie/Druckers; chair, RSA; essayist, Financial Times
Professor Susan Neiman director, Einstein Forum; author, Moral Clarity: a guide for grown-up idealists and Evil in Modern Thought
Brendan O'Neill editor, spiked; blogger, Guardian Comment is Free; author, Can I Recycle My Granny and 39 Other Eco-Dilemmas
Chair: Claire Fox director, Institute of Ideas; panellist, BBC Radio 4's Moral Maze