Read the excerpt from act 3, scene 6 of The Tragedy of Macbeth. Lennox and another lord are discussing the state of their kingdom. The lord says that a messenger approached Macduff and stated that Macbeth wanted him to immediately return to Scotland, but Macduff refused. [ Lord: ] thither Macduff Is gone to pray the holy king, upon his aid To wake Northumberland and warlike Siward: That, by the help of these—with Him above To ratify the work—we may again Give to our tables meat, sleep to our nights, Free from our feasts and banquets bloody knives, . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lennox: Sent he to Macduff? Lord: He did: and with an absolute "Sir, not I,” The cloudy messenger turns me his back, And hums , as who should say "You’ll rue the time That clogs me with this answer.” What mood does the onomatopoeia of "hums” help create?