Lewis's understanding of Christianity, as displayed in the Narnia series, is very different from mine, though I liked his Screwtape Letters.

I was surprised rereading Watership Down last year for my Yuletide story how much I disliked the narratorial interjections. I guess as a child I just got used to authors talking down to me. One of the reasons I loved the slightly more modern Earthsea & Diana Wynne Jones, which don't do that, at least not overtly.