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3 Note the double meaning of "done" in this line: in the first instance it means "finished," in the second "performed." Macbeth's meaning, which he goes on to illustrate through the next seven lines, is that if the whole matter could be settled by one blow, it would be well to strike that blow quickly. http://www.markedbyteachers.com/university-degree/linguistics-classics-and-related-subjects/analysis-of-macbeth-s-soliloquy-act-1-scene-7.html 4 http://www.enotes.com/homework-help/why-does-macbeth-hesitate-kill-duncan-372757 http://www.enotes.com/homework-help/act-1-scene-7-why-does-macbeth-hesistate-kill-107785 This is perhaps the most important single scene of the play. Here for the last time we see Macbeth a free man, still capable of choice between good and evil. The motives that are at work to deter him from committing the murder, fear of the consequences in this world, mingled feelings of kinship, loyalty, and hospitality, admiration for Duncan's goodness, are not, perhaps, of the highest moral character; but in comparison with the reckless lust of power which urges him on, they are certainly motives for good. The conflict rages in his soul, and it seems as if the powers of good were triumphing, when Lady Macbeth enters.
Instantly she throws into the scale all the weight of her influence, backed by a relentless decision to contemplate nothing but the immediate necessity for action. Macbeth wavers for an instant, and then, not so much overpersuaded, as stung into action by the taunts of his wife, plunges headlong into the crime. From this time till the end of the play Macbeth is no longer a free man. All his remaining actions spring by the logical necessity of crime from his first deed of blood.
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