One of the most popular and beloved introductions to the concept of faith ever written, Mere Christianity has sold millions of copies worldwide. In one of the most popular introductions to the Christian faith ever written, C. S. Lewis sets out simply to 'explain and defend the belief that has been common to nearly all Christians at all times.' Rejecting the boundaries that divide its many denominations, he provides an unequalled opportunity for believers and nonbelievers alike to hear a powerful, rational case for Christianity. Bringing together his celebrated BBC lecture series broadcast during the war years, Mere Christianity reminds us of the truly important things in life and shows the way to joy and contentment. This brilliant collection confirms C. S. Lewis' reputation as one of the leading writers and thinkers of our age.