Macbeth's drive for power to be king is the primary source within the play. From the very beginning to the very end Macbeth is constantly trying to gain the crown. The problem is this: Did Macbeth make any mistakes of judgment? To really solve this problem one must look at all of the impaired decisions Macbeth made along the way, and how they affected his "master plan." Macbeth let many things get in the way of his morality. It is comprehensible that Macbeth used unreliable information, listened to the wrong sources and let his unreasonable passion get in the way of making clear mental decisions of character and judgment.

In the very beginning of the play, the witches are introduced signaling the reversal of moral order. They immediately tell Macbeth that he will be Thane of Cawdor, Thane or Glamis, and soon king (I.iii...