Quote from : The Narnian: The Life and Imagination of C. S. Lewis Book

Objections to Christianity... are phrased in words, but that does not mean that they are really a matter of language and analysis and argument. Words are tokens of the will. If something stronger than language were available then we would use it. But by the same token, words in of Christianity miss the mark as well: they are a translation into the dispassionate language of argument of something that resides far deeper in the caverns of volition, of commitment. Perhaps this is why Saint Francis, so the story goes, instructed his followers to "preach the Gospel always, using words if necessary." It is not simply and straightforwardly to make arguments in the defense of the Christian faith, but it is a relatively superficial activity: it fails to address the core issues.