Lately, I've been reading Alister McGrath's The Future of Christianity. McGrath is particularly worth reading because he succeeded academically and professionally as a scientist before jumping off the track and becoming a superb scholar of religion and history. This is one well-rounded mind we are dealing with. Virtually everything I've picked up with his name on it has been worth the time. This book is no exception. Discover McGrath and you discover a treasure trove. He's very prolific.