The narrator has a pessimistic attitude. He is a bit grumpy, really, and skeptical of many people. He is close-minded, as well, which causes problems with how he deals with his wife's friend. He does not understand, nor does he attempt to understand, who her friend really is. The narrator goes about his business and does not make attempts to get to know him.
The narrator is uncomfortable with Robert's (the friend) blindness and does not know how to handle his disability.
The narrator also does not attempt to listen to his wife about her friend. He disregards her attempts and treats her much in the same way he treats her friend. It is not until the end of the story that he has an epiphany. Robert asks the narrator to describe what he sees on the television, but the narrator does not really know how to do so. The narrator then experiences an epiphany:
When clips of a cathedral appear on the screen, the narrator, ever inarticulate, is unable to describe a cathedral. The blind man teaches the narrator to "see" the cathedral through drawing.(eNotes)