Macbeth’s ambition was the cause of his own downfall, for if he realized that his own ambition was causing bad events in his life, many lives could’ve been saved . First, his ambition led him to believe the witches’ prophecy : “All hail, Macbeth, that shalt be King hereafter!” (1. 3. Page 19). In my opinion, Macbeth known better than to believe the witches. For all he knew, they could’ve been eavesdropping on the conversation of the King declaring Macbeth Thane of Cawdor. Next, Macbeth was extremely eager to please his wife, so he killed the King. If she had not encouraged Macbeth in such ways, Macbeth may have not killed King Duncan: “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. Page 43). My thoughts are, that Macbeth should’ve realized he was being pressured into doing such a disastrous deed. Had he not killed Duncan, many lives would’ve been saved. Lastly, when Macbeth gains the throne, he his so keen on keeping his place on the throne; consequently, he kills one of his closest friends by protecting his throne. When Macbeth was scared about Banquo’s child becoming king, because of the prophecy he ordered Banquo and his child, Fleance to be killed : “...leave no rubs nor botches in the work, Fleance his son, that keeps him company, whose absence is no less material to me than is his father’s, must embrace the fate of that dark hour” (3. 1. Page 87). Macbeth is asking the murders’ to kill Banquo and Fleance. My thoughts are that Macbeth could have either accepted his fate, or prevent it without killing his friend.
In the play, at this time, Duncan has just been murdered. To lift the heavy mood Shakespeare added in some comic relief, The Porter. The Porter is the person responsible for opening, and closing the gate to Macbeth's castle, but he is intoxicated. Shakespeare had the Porter say, "...it provokes the desire, but it takes away the performance" (2. 3. Page 61). That was massively appealing to the audience and was sure to make them laugh.
What's happening right now, is after a battle King Duncan finds out that his current Thane of Cawdor is a traitor: "No more that Thane of Cawdor shall deceive our bosom interest" (1. 2. Page 13). He awards Macbeth the title: Thane of Cawdor. This foreshadows Macbeth, the new Thane of Cawdor, betraying the King.
In the play, Macbeth has just murdered Duncan, the king: "I have done the deed" (2. 2. Page 53). Macbeth has taken the life of one of Scotland's greatest kings. If he had no killed Duncan, many lives would've been saved, including his own