‘Lewis once referred to certain kinds of books as a “mouthwash for the imagination”. This is what he attempted to provide in the Narnia stories: an unfamiliar world in which we could rediscover what it might mean to meet the holy without the staleness of religious preconceptions as they appear in our culture.
The point of Narnia is to help us rinse out what is stale in our thinking about Christianity – which is almost everything… the essential thing is this invitation to hear the story as if we had never heard it before. And, for a growing number of readers who actually haven’t, the effectiveness can be measured.’
(Rowan Williams, quoted in the Church Times last week: article ‘What is the point of Narnia?’ He has written ‘The Lion’s World’, a reflection on the ideas and theology in the Narnia books).