As the play proceeds, Macbeth becomes more reliant on the witches prophecy to drive him to become king.They are obviously deceiving and are only saying these things for their own self benefit. Macbeth causes himself to become more depressed because he is guilty of killing King Duncan. This influences him to become ignorant to his actions of killing, this makes him kill more people for his self benefit. He would never have wanted to kill King Duncan or even become king in the first place if the witches had not influenced him by telling him this prophecy. Even though the Witches play a major part in causing Macbeth to kill and cause tragedy and start the wheels in motion, Lady macbeth and his own ambitions are the real culprits of corrupting Macbeth.
Thought this play Macbeth knew that committing the murder was wrong but after his wife consistently challenged his manhood he decided to kill Duncan. Letting Lady Macbeth influence his decision negatively impacted his mental state causing him to make unjustifiable choices. Although Macbeth agreed to kill the king, he was initially against it. When Lady Macbeth began to insult his manhood he took it personally, and felt he needed to prove to her that he was a man. Having his manhood insulted drove him insane, and letting the thought of being invincible caused him to become mentally impaired.
Macbeth was supposed to be a loyal thane, but betrays his ruler. Macbeth says before the murder, “This even-handed justice Commends th’ ingredience of our poisoned chalice To our own lips”(1.7.10-12). Although some may argue Macbeth’s greed is more important because his greed caused him to kill Duncan, deception is more important because it gave him the opportunity to kill Duncan. Also, no one will suspect him of the murder after the fact. Macbeth also deceives the people of Scotland by becoming the king even though he gave himself the crown unjustly by murdering Duncan.
That shalt be king hereafter.” (I.iii.53) which makes Macbeth wonder to himself if the witches are telling the truth. However, Macbeth’s illusions take over his reality which leads to the death of King Duncan. Macbeth’s false perception of reality also makes him kill the two guards protecting Duncan’s room. Macbeth killed the guards to show his loyalty to the other people at the castle. Therefore, Macbeth made the others have a false perception of reality which forced the others not to suspect Macbeth of the murder.
William Shakespeare’s Macbeth is the play which tells the story of a soldier and the disastrous path which he took in pursuit of the throne. Macbeth was a victim of forces beyond his control; they are the witches and Lady Macbeth. The witches create a stimulus for Macbeth to become destructive in his pursuit for the throne. However Macbeth was only persuaded and ready to kill after being influenced by Lady Macbeth. Therefore we can assume that it was Lady Macbeth that transformed Macbeth into a megalomaniac.
But then Lady Macbeth pressured Macbeth into killing Duncan to become king by calling him a female and tearing his self confidence down. “When you durst do it, then you were a man;/ And to be more than what you were, you would be so much more the man” (1.7. 56-58). As she was saying this Macbeth lost bravery, but when he fought with Macduff he gains some of his bravery and strength back. Macbeth had a problem of hesitating, he was a very courageous man but his easily persuaded personality became a roadblock to his pursuits.
Overall I think that Macbeth is to blame for the death of King Duncan because however much someone tries to make someone commit a murder, it is always the murderers fault, as he did not have to listen to his wife or the 3 witches. When the witches told Macbeth about him becoming King, they may have meant that Duncan might have died naturally. But instead he made an immediate reaction and started thinking in an evil way with tragic consequences.
As a result of his insecurity of his lack of manliness, Macbeth’s soul couldn’t be cleansed again. Macbeth proved to his wife that he was a “man” but the consequence of murdering the king was the beginning of the corruption of Macbeth’s soul because of the sense of power he had. Macbeth saw his actions as justifiable because he was motivated by his self-interest. Although Lady Macbeth pushed Macbeth to abuse his powers, it was ultimately his own doing because he had a choice to go or not go along with it. Macbeth decided to go through with his plan to kill Duncan, “I am settled, and bend up/Each corporal agent to this terrible feat/Away, and mock the time with fairest show/False face must hide what the false heart doth know” (1.7.92-96).
Macbeth doesn't seem to be anything but a scared coward who cannot stand for himself. He couldn’t even tell Lady Macbeth that he had killed Banquo. Even though Lady Macbeth helped to plot Duncan's murder, stereotypes of men and women in the time period make the men not expect and act of murder from a woman. The quotation, “Shake my fell purpose, nor keep peace between the effect and it” was said by Lady Macbeth showing foreshadowing. It makes it sound like she is about to do something evil.
They then said of thou be none." Banquo noted how Macbeth looked fearful and he must have realised the witches put into words what Macbeth had been thinking. The supernatural forces not only got Macbeth thinking about how he could become king but also laid the foundations for his feelings of insecurity that would lead to his subsequent murder of Banquo. The major external influence pushing Macbeth to kill Duncan was Lady Macbeth. She knew her husband was " too full o' the milk of human kindness" to take the initiative and she resolved to push him into murdering Duncan Macbeth was so upset after killing Duncan he stated " I'll go no more, I am afraid to think what I have done".