Famous quotes can add explanatory power to the narrative and add literary grace to the article. With a few words from great people, the article will be fuller. For example, if you saw a certain scenery that was so beautiful, which relevant sentence can you quote? Poems. When I see peach blossoms, I find a few verses describing them. When I see heavy snow, I think of the verses about snowflakes. The article immediately becomes vivid and the language becomes more beautiful.