O. Henry is a famous short-story writer at the end of 19th century America. Mammon and the Archer is one of the most influential short stories of him. The story is short but original, and it is quite controversial due to its advocating of "Money is all-powerful". This thesis attempts to disclose its unique and profound themes from four aspects: all-powerful money and all-powerful love, the new millionaire and the old aristocrats, the...