Carl Sandburg was an American poet and writer who won three Pulitzer Prizes. One of his most famous poems is "Fog", which is only six lines long. The poem compares a fog rolling into a city and harbor to a kitten, describing how it comes in silently and sits looking over the landscape in the way a cat might. It sits silently on its haunches before moving on, mirroring how cats and fog are both transient presences that do not remain in one place for long.