Final answer:
Without the exact lines 146-147, we draw upon other parts of Macbeth's dialogue to infer his beliefs. He contemplates the complexity of human emotions and the consequences of ambition and murder within the play's context.
Step-by-step explanation:
Lines 146-147 from Shakespeare's Macbeth are not provided in the reference material above, and thus it is unclear which part of the text they refer to. However, the essence of Macbeth's beliefs can be drawn from the thematic elements present throughout the play. Macbeth often grapples with issues of ambition, power, fate versus free will, and the consequences of one's actions, which are exemplified in several quotes provided. For instance, when Macbeth says "If it were done when 'tis done, then 'twere well It were done quickly", it reveals his belief in the efficiency of action, but also his fear of the moral and existential consequences of his deeds. Additionally, his statement to Macduff about the conflicting emotions in the aftermath of Duncan's murder, "Who can be wise, amazed, temperate and furious, Loyal and neutral, in a moment? No man", encapsulates his belief that human emotions are complex and can be contradictory, especially under extreme stress.