In "Mending Wall", by Robert Frost, the person who questions the necessity of the fence is the narrator. The narrator is not sure whether to mend the fence or not, but his neighbor repeats his father's words and traditions 'Good fences make good neighbors'. He thinks that mending the wall is being practical and doesn't want to hear the narrator's opinion against its utility.
The authors purpose of this story is to show that if love really exists. In this story Daisy is said to be in love with Gatsby. But is she really in love with him or in love with his wealth?