As the quest begins, the action heats up, and we explore more important themes: (1) Identity and Courage (Eustace models boldly standing up for what is right and true, even in circumstances where that could have been dangerous); (2)Sins (small and large) have consequences--redux (Jill and Eustace are deeply concerned because they have utterly and irretrievably blown it in terms of following the first of Aslan's signs because of their sinful choices); (3) Comfort is often the enemy of the Quest (Jill is so delighted with the comfort and luxury of the castle that she utterly forgets Aslan and the signs); and (4) To carry out Aslan’s call, we often need people very different from us (Puddleglum is a creature very strange to the children's eyes, with green skin, unnatural height, a peculiar way of speaking, and a diet of unsavory things like eels. Yet, without working with Puddleglum, the Quest would be doomed to failure).