In The Lion, the Witch, and the Wardrobe, good and evil are straightforward and undisguised. Good is ultimately more powerful than evil, although evil does seem to have a necessary place in the world. People who are good may still have to suffer and make difficult choices, but ultimately everything will work out for them and they will enjoy a happy ending. Even people who make serious mistakes can be redeemed and rejoin the side of good. Creatures who are truly evil will be vanquished in the end. Evil is most disturbing because it preys on our own weaknesses and negative traits.
In The Lion, the Witch, and the Wardrobe, both good and evil are limited by certain constraints on the way the universe and morality work – the Deep Magic from the Dawn of Time and the Deeper Magic from Before the Dawn of Time.
Although Aslan is good, he is still unpredictable and fearsome.