From the moment Macbeth's ears first caught the prophecy of the strange sisters, his ambition began to manifest and flood his mind. “[Aside from] The Prince of Cumberland! It is a step / on which I must fall, or else jump over, / because it is in my path. 1.4.48-50. In this quote, Macbeth addresses the current prince and comes to the conjecture that since he is next in line to the throne, he poses an obstacle. This is the beginning of Macbeth's anger and his first cold-blooded ambitious thought. From this point on, Macbeth begins to illustrate dehumanization and sees the world from a changed perspective. Later, after the first murder, the new king inflated his self-confidence and selfishness: “With exposed power, sweep it from my sight. » 3.1.119. Macbeth believes that he now has enough influence to be able to order that anyone he wishes to die be "swept from his sight", which in this case is one of his close friends Banquo and his son Fleance. His desire to savor his new reign led Macbeth to become a cold-blooded murderer and abandon his scruples. His unrealistically assumed power could be a response to his previous murder, carrying no repercussions, although he eventually received his reward and paid his price.