In 1943 Great Britain, when hope and the moral fabric of society were threatened by the relentless inhumanity of global war, an Oxford don was invited to give a series of radio lectures addressing the central issues of Christianity. Over half a century after the original lectures, the topic retains it urgency. Expanded into book form, Mere Christianity never flinches as it sets out a rational basis for Christianity and builds an edifice of compassionate morality atop this foundation. As Mr. Lewis clearly demonstrates, Christianity is not a religion of flitting angels and blind faith, but of free will, an innate sense of justice and the grace of God.