Stephen is an Oxford-based lecturer at London University. He is editor of THINK – the journal of The Royal Institute of Philosophy. Headline published his first book The Philosophy Gym in 2003. The Philosophy Files, a children’s book on philosophy, which Orion sold in many languages, was followed by more books for children. Of his book The War for Children’s Minds, on bringing up children in a Liberal Enlightenment tradition, Philip Pullman writes ‘Should be read by every parent, every teacher and every politician’. He has also written The Great Philosophers which is published by Quercus.