The Lord of the Rings is so full of goodness. It's good on a literary quality level, but it's also just crammed full of good things written by a guy who understands goodness. It's good on a literary level, good on a moral level, good in its appreciation of so many different kinds of good things. You've got the vastness of ancient myths and the homely coziness of small towns and casual heroism from the most ordinary people. It knows a hot bath is good, an ancient legend is good, giving up everything and everyone you've known in a desperate attempt to save the world is good. So many different layers of what good is, and it understands and appreciates all of them. Very few books are to-the-core Good the way that this one is.