Literary Thought

I am reading a biography of C.S. Lewis ("Jack"), and in it, the author states the following about Lewis's opinion about how Christianity should be approached by writers:

At this stage in his career, he was not often so explicit about his intent, because he was only gradually coming to realize that he had the power to evangelize through the writing of popular books in which Christianity was implicit. . . . He pointed out that the difficulties of the Christian writer or lecturer arose from the fact that the culture was not at all Christian. This meant that the influence of a Christian lecture or article would be undermined very quickly by the influence of films, newspapers, and novels in which an opposing point of view was taken for granted. This made it impossible for the Christian writer to achieve widespread success. What was wanted was not more 'little books about Christianity,' but more books by Christians on other subjects in which the Christianity was latent. All his fiction is of this sort, as are his philological books and works of literary criticism.

I think this is interesting. It reminds me a little bit of the Trojan horse--sneaking Christian ideals into the culture. Actually, this biography reports that this is exactly what Lewis was aiming to do with the Narnia stories. They weren't intended to convert but to implant Christian ideas and make kids comfortable with them so that when they encountered the Gospel later, they'd be more likely to accept it.

Modern examples of this are bands like Switchfoot and movies like, well, The Lion, the Witch, and the Wardrobe.

What do you think about this idea?