THS is a great favorite of mine, I re-read it and its companion novels, “Out of the Silent Planet” and “Perelandra” every couple of years. Much like the Minor Prophets of the Old Testament, they are like reading tomorrow’s headlines when describing the state of craven mankind in a fallen world.
If you haven’t already, try “The Ball and the Cross” or “The Man Who was Thursday” by GK Chesteron.