“A book could be written if Harpo didn't eat it first, or Groucho and Chico tear it up page by page on the art of the Marxes. You could call it surrealism, or or dadaism, or what about that -ism that all depends on the use of staircases? You could analyse its clear cold illogic, entirely divorced from emotion. You could suggest that Harpo, with his motor horn, is in the direct line of the clowns of history. You could even argue that it represents the furthest manifestation of, pure comedy on the modern screen, and you wouldn't be far wrong.”