For an ordinary person, hearing is only a part of her life, but for a musician, hearing is his entire life. Losing hearing is equivalent to losing his entire life. Therefore, Beethoven used this sentence to tell us that deafness caused communication barriers for her, and she was often misunderstood, and her social interactions were greatly restricted. Being deaf, he was not as good as a tree, because a tree could hear the sounds of nature, and it also reflected her loneliness and depression.