Banquo and his son Fleance walk in the torch-lit hall of Macbeth’s castle. Fleance says that it is after midnight, and his father responds that although he is tired, he wishes to stay awake because his sleep has lately inspired “cursed thoughts” (2.1.8). Macbeth enters, and Banquo is surprised to see him still up. Banquo says that the king is asleep and mentions that he had a dream about the “three weird sisters.” When Banquo suggests that the witches have revealed “some truth” to Macbeth, Macbeth claims that he has not thought of them at all since their encounter in the woods (2.1.19–20). He and Banquo agree to discuss the witches’ prophecies at a later time. Banquo and Fleance leave, and suddenly, in the darkened hall, Macbeth has a vision of a dagger floating in the air before him, its handle pointing toward his hand and its tip aiming him toward Duncan. Macbeth tries to grasp the weapon and fails. He wonders whether what he sees is real or a “dagger of the mind, a false creation / Proceeding from the heat-oppressed brain” (2.1.38–39). Continuing to gaze upon the dagger, he thinks he sees blood on the blade, then abruptly decides that the vision is just a manifestation of his unease over killing Duncan. The night around him seems thick with horror and witchcraft, but Macbeth stiffens and resolves to do his bloody work. A bell tolls-Lady Macbeth’s signal that the chamberlains are asleep-and Macbeth strides toward Duncan’s chamber. Summary: Act 2, scene 2 Will all great Neptune’s ocean wash this blood Clean from my hand? No, this my hand will rather The multitudinous seas incarnadine, Making the green one red. (See Important Quotations Explained) As Macbeth leaves the hall, Lady Macbeth enters, remarking on her boldness. She imagines that Macbeth is killing the king even as she speaks. Hearing Macbeth cry out, she worries that the chamberlains have awakened. She says that she cannot understand how Macbeth could fail-she had prepared the daggers for the chamberla