s in his head and the idea of murder enters. Macbeth wonders "If chance will have me king, why chance may crown me without my stir" (lines 43-44). Macbeth does not think that he can become king if he does not do anything to make it so.
The present thane of Cawdor is executed. This is also when Macbeth begins to die. Duncan states that you can never judge someone by his or her outward appearances. He is wise in his words but does not realize that Macbeth is one that should not be judged by his appearance at all. When Duncan states that Malcolm shall be the next king of Scotland, Macbeth's ambition is sparked and the idea to kill Duncan is shown by saying, "Let not light see my black and deep desires" (line 51).
When Lady Macbeth reads Macbeth's letter she wonders if Macbeth has what it takes to murder Duncan. She fears that Macbeth is "too full o'th'milk of human kindness to catch the nearest way" (line 15). Lady Macbeth becomes obsessed with her evil plans and will not allow Macbeth to even think of failure. She calls on evil spirits to take any shred of kindness and decency that she has in her so that she can take charge of her evil plans. Macbeth enters and she tells him to "look like th'innocent flower, but be the serpent undr't" (line63). Lady Macbeth is officially in charge.
When Duncan arrives at Macbeth's castle the first thing that he says is of its pleasantness. He clearly trusts Macbeth and Lady Macbeth. He is blind to any evil doings and gives Lady Macbeth his hand and is led to his killer.
Before Macbeth kills Duncan, he ponders his decision. He has "no spur to prick the sides of [his] intent, but only Vaulting ambition" (line25). This is Macbeth's tragic flaw that kills him in the end. When Macbeth tells Lady Macbeth that he is not going to follow through with the plans she accuses him of not being a man and makes a reference to children, "I have given suck and know how tender 'tis to love the babe that milks me:...