In act 1, scene 5, the ghost of Hamlet's father urges the prince to seek revenge. At first, Hamlet expresses pity for the ghost's plight, but the ghost tells him not to feel bad for him. Instead, Hamlet should avenge his father's death. The ghost tells Hamlet that his uncle Claudius murdered him one day by poisoning him as he slept. Hamlet is shocked to hear this news but not surprised, as he never had fond feelings for his uncle.
It seems that the ghost of Hamlet's father is as upset at Claudius's seduction of Queen Gertrude as he is for the murder itself. While he wants Hamlet to kill Claudius, he exhorts him not to harm Gertrude. He says that her punishment will be left up to fate.
He is also upset that he was killed before he could seek redemption for his many sins.
Unhouseled, disappointed, unaneled.
No reckoning made, but sent to my account
With all my imperfections on my head. (act 1, scene 5, 77–79)
The ghost urges Hamlet to set the throne of Denmark to right by killing Claudius and...
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