How might C.S. Lewis, the greatest Christian apologist of the twentieth century, respond to the twenty-first century 'new atheism' of Richard Dawkins, Christopher Hitchens and company? Might Lewis' own journey from atheism to Christian belief illuminate and undercut the objections of the new atheists? Christian philosopher Peter S. Williams takes us on an intellectual journey through Lewis' conversion in conversation with today's anti-theists. 'This book shows the breadth, depth, and durability of Lewis's Christian apologetics.' Michael Ward, chaplain at St Peter's College, Oxford 'Peter Williams is a bright, young British philosopher and a skilful debater with whom I had the privilege of partnering in our Cambridge Union Society debate in 2011. I recommend his work enthusiastically.' William Craig, Research Professor of Philosophy at Talbot School of Theology in La Mirada, California