Ghost
Hamlet
Ghost
Hamlet
SARAH: The ghost says that if Hamlet does not take revenge on Claudius, he'll be duller than a weed that grows on Lethe wharf.
RALPH: This is another reference from Greek mythology. Lethe is one of the 5 rivers in Hades, the ancient underworld. It was the river of oblivion or forgetfulness; when the souls of the dead drank its waters, they forgot their past earthly experiences. A wharf is a dock where ships moor, but Shakespeare is using it metaphorically here to mean the riverbank.
SARAH: A striking image: if Hamlet does not avenge his father, it would be as if he had drunk from the Lethe river, and the ghost's command had been removed from his memory, rendering him as useless as the weeds growing along that river of forgetfulness.
RALPH: The ghost's emphasis on memory and forgetfulness will become a theme that runs throughout the scene - the ghost's last words to Hamlet are "remember me", and then Hamlet will pick up the theme in his own monologue after the ghost leaves.