Respuesta :
Macbeth is realizing that all of his striving for power is for nothing
Answer: Macbeth is realizing that all of his striving for power has been for nothing.
Macbeth's tragic journey in the play is caused by his enormous greed. His ambition and thirst for power lead him to commit acts he finds reprehensible, and even to lose his mind. In this powerful speech, Macbeth reflects on this tragedy, and realizes that all the material things he desired in life are really nothing, as life is only a "walking shadow."