John Bunyan’s famous work "The Pilgrim’s Progress" pictures a man raking filth while an angel tries to crown him with eternal glory. The angel repeatedly calls him to “Look up,” but the man is so intent on muck that he doesn’t see the angel or the crown. Bunyan’s originally intended to impress upon his readers the hope of their salvation rather than the cares of this world, but the image has been reused many times since then, often referring to writers who work in the journalistic mud.