Clearly the way in which the narrator is shown to be a rather limited individual who is very unsympathetic and lacking in empathy is revealed at key points in his narrative. Consider, for example, the numerous faux-pas that the narrator makes in his conversation with Robert, much to his wife's chagrin and disgust. One example of this is when he struggles to find something to say and asks Robert about his journey:
Then I wanted to say something else, small-talk, about the scenic ride along the Hudson. How going to New York, you should sit on the right-hand side of the train, and coming from New York, the left-hand side.
We see in this quote the narrator's own inarticulate nature and his desire to make "small-talk," and how this desire leads him to draw reference to Robert's blindness. Such an example, combined with others, such as when the narrator turns the television on when he gets bored of the conversation, shows him to be inarticulate and isolated and also very unsympathetic and lacking in empathy. It also can make us feel slightly sorry for him, as he desires to be able to communicate, but is lacking in the skills of building and establishing relationships.