G. K. Chesterton wrote of Orthodoxy that it represented an attempt 'to state the philosophy in which I have come to believe' and to do so 'in a vague and personal way, in a set of mental pictures rather than in a series of deductions'. For most of its readers, it is the wittiest and most rollicking defence of the Christian faith ever written. Anticipating much modern theology, Catholic and Protestant, Chesterton's apologia is more personalistic than propositional. He understands that, in order to be credible, a belief system must appeal to the heart as well as to the mind. No one has set out more engagingly the reasons for believing in Christianity as the timeless truth about who we are, and rejecting the alternatives as fads and fashions. Jon Elsby, author of Light in the Darkness and Wrestling With the Angel, has written extensively on Christian apologists and apologetics, and has penned an illuminating introduction for this edition of Orthodoxy, which also contains brief notes and an index.