Here is a great post on that subject, and by that title, at All Manner of Thing. In the form of a review of two books about Dickens, including Chesterton's, it's an excellent and fascinating overview of both the man and the work. I've been meaning to link to it for a week or so. Long, but definitely worth your while. It was interesting to me to find that I have only read Dickens's later work. I really must read The Pickwick Papers.