It is discussing the transcendental and temporal values in the society of Shakespeare's Macbeth with good quotations.

Macbeth has many examples where characters get to select either temporal way or transcendental way out of the situations they get in. Choosing the temporal way usually give them a short-time happiness, success even transcendental values like honoring and respecting from other people. But when they get old, having lost all the power, they can no longer get a temporal success and happiness--only transcendental values last forever. Then they realize that they no longer have …

…of staying in the kingdom and fighting for throne--since their father was dead, they got out of the country in order not to get blamed for it and though about what to do. This may raise a supporting theme that Macbeth used to think before he acts and did honorable and brave things, which were transcendental values. Brainwashed by Lady Macbeth, he started to become greedy for power and did not think about his future.