" Forgetting.” she said, “is a beautiful thing. When you forget, you remake yourself. The Continent must forget. It is trying not to—but it must. For a caterpillar to become a butterfly, it must forget it was ever a caterpillar at all. Then it will be as if the caterpillar never was, & there was only ever the butterfly. "

― Robert Jackson Bennett , City of Stairs (The Divine Cities, #1)