From the moment Macbeth's ears first caught the prophecy of the Weird Sisters, his ambition began to creep in and flood his mind. “[Aside] The Prince of Cumberland! That is a step / on which I must fall, or jump, / because it lies in my way. 1.4.48-50. In this quote Macbeth addresses the current prince and comes to the conjecture that, because he is next in line to the throne, he constitutes an obstacle. This is the beginning of Macbeth's anger and his first cold-blooded ambitious thought. From this point on Macbeth begins to exemplify dehumanization and sees the world from a changed perspective. Later, after the first murder occurred, the new king inflated self-confidence and a selfish level: "With bare-faced power sweep him from my sight." 3.1.119. Macbeth feels that he now has enough power that he can order that anyone he wishes dead be "swept from his sight", which in this case is one of his closest friends Banquo and his son Fleance. His desire to enjoy his new kingdom led Macbeth to become a cold-blooded murderer and abandon his regrets. His unrealistic supposed power may be a response to his previous murder which had no repercussions, despite him ultimately receiving his punishment and paying his dues..