Read this excerpt from “The Man Against the Sky” by Edwin Arlington Robinson.Between me and the sunset, like a domeAgainst the glory of a world on fire,Now burned a sudden hill,Bleak, round, and high, by flame-lit height made higher,With nothing on it for the flame to killSave one who moved and was alone up thereTo loom before the chaos and the glareAs if he were the last god going homeUnto his last desire.Dark, marvelous, and inscrutable he moved onTill down the fiery distance he was gone,—Like one of those eternal, remote thingsThat range across a man's imaginingsWhen a sure music fills him and he knowsWhat he may say thereafter to few men,—The touch of ages having wroughtAn echo and a glimpse of what he thoughtA phantom or a legend until then;For whether lighted over ways that save,Or lured from all repose,If he go on too far to find a grave,Mostly alone he goes.What is the main difference between Robinson’s “The Man Against the Sky” and Frost’s "Mending Wall"?