On chapter 4, volume II of the novel Frankenstein the creature analyzed the behaviors of the De Lacey family members, and concluded that something was really bothering them to the point of tears.
In the creature's words:
They were not entirely happy. The young man and his companion often went apart, and appeared to weep. I saw no cause for their unhappiness; but I was deeply affected by it.
As the creature continued to observe those reactions, he identified what he refered to as "one of the causes of their uneasiness." The cause of uneasiness was poverty.
The poverty that the De Lacey family suffered caused them...
(The entire section contains 334 words.)