Reading C.S. Lewis' THE GREAT DIVORCE. It's a spirited defense of the idea that some souls won't be saved

Now I'm reading C.S. Lewis' THE GREAT DIVORCE: a Christian apologetic for the idea of Hell (basically positing that souls can escape from Hell, but they don't want to!) There ought to be no way to make this work (because how can anyone know?) But the core of the book is Lewis defending the idea that all humans are sinful, that all human works are ultima…