What is the main idea of this famous speech from act v of the tragedy of macbeth by william shakespeare?

MACBETH. … all our yesterdays have lighted fools The way to dusty death. Out, out, brief candle! Life’s but a walking shadow, a poor player That struts and frets his hour upon the stage And then is heard no more. It is a tale Told by an idiot, full of sound and fury Signifying nothing. What is the main idea of this famous speech from Act V of The Tragedy of Macbeth by William Shakespeare?

Macbeth is realizing that all of his striving for power has been for nothing.

In this speech he refers to how ephemeral life is, it is only a shadow that comes and goes every day. It is a story that each person tells and he feels idiotic to tell his.  When facing death Macbeth realizes that all of his striving for power has been for nothing.

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that’s a nice boss :

her eyes water as she let her go

her mothers hand goes limp

face white and pale

lips blue and stale

she is gone

sadness fills her body

she collapses to her knees

as her mothers disease leaves the girl alone