The key answer of exercise 6

The story deals with greed (the man takes more than he really needs, and loses nearly everything), poverty (although they have very little, the wife thinks at the end that they will be better off with their old way of life), dignity (although they are poor they are self-reliant and independent, and they have each other; they show more dignity in this situation than when they have more money and argue and worry about what to spend it on).