Everyday people are changing or gaining new perspectives and opinions. The foundations of their knowledge are based upon those opinions and therefore control their every subconscious command, which in turn, the subject acts out in reality. These foundations grow and widen as they are influenced by powerful inspirations, whether positively or negatively. In Shakespeare's play Macbeth, a few characters appear fickle in the ways of how easily they change after an event. Some change for the worse - others for the better, meanwhile some complete a full cycle.
At the beginning of the play, one finds Macbeth and Banquo, best of friends, are greeted by three witches who reveal Macbeth as the "Thane of Cawdor- (Mac 1.3.49) and that he "shalt be King [thereafter]- (Mac 1.3.50) and that Banquo's predecessors will be kings. At first, both men are unsure, but after Ross announced Macbeth as the Thane of Cawdor, Banquo believes it to be coincidence, but Macbeth, however, sees it as his prophesies coming true. Macbeth writes to his "dearest partner in greatness- (Mac 1.5.10), Lady Macbeth, explaining to her that she will soon be queen and he king. Already, one is able to see how Macbeth is beginning to change by the negative influence of the witches. Lady Macbeth, too, changes by the news in his letter, also for the worse. Then unsatisfied with her lifestyle, she begins to conceive a devious plan to murder the king Duncan. Macbeth struggles with himself with the contemplation because of many reasons; first of all, Duncan was his friend, his king (and a great king at that), Macbeth is twice a nobleman (Thane of Cawdor and Thane of Glamis), and he is also the host the night he is to murder Duncan. He ponders aloud:.
Is this a dagger which I see before me? [ ] Hear it not, Duncan ; for it is a knell That summons thee to heaven, or to hell (Mac 2.1.33-65).
He does murder Duncan. After the killing, the king's two princes flee, leaving themselves looking guilty.