Note the kinds of conflict: internal conflict takes place within a character; external conflict takes place between the character and others: man vs. man, man vs. society, man vs. God (supernatural), and man vs. nature.
In Shakespeare's Macbeth, there are several motifs (like themes)—guilt, fear, ambition, and evil—and the themes of appearance vs. reality and good vs. evil.
A motif is:
A conspicuous recurring element, such as a...reference ...which appears frequently in works of literature.
A theme is a main idea that an author attempts to share with the audience.
Regarding ambition, Macbeth says:
I have no spur
To prick the sides of my intent, but only
Vaulting ambition, which o'erleaps itself,
And falls on th'other… (I.vii.25-28)
Power is the only reason he has to kill Duncan. Macbeth expresses guilt and regret when men come to the castle early the morning after the murder to get the King. Macbeth knows that Duncan will not hear their knocking, and wishes it were not so:
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