nius's son Laertes prepares to depart for France, Polonius offers him advice that culminates in the maxim "to thine own self be true." Polonius's daughter, Ophelia, admits her interest in Hamlet, but Laertes warns her against seeking the prince's attention, and Polonius orders her to reject his advances. That night on the rampart, the ghost appears to Hamlet, tells the prince that he was murdered by Claudius (by pouring poison into his ear as he slept), and demands that Hamlet avenge the murder. Hamlet agrees, and the ghost vanishes. The prince confides to Horatio and the sentries that from now on he plans to "put an antic disposition on", or act as though he has gone mad. Hamlet forces them to swear to keep his plans for revenge secret; however, he remains uncertain of the ghost's reliability. Act II Ophelia rushes to her father, telling him that Hamlet arrived at her door the prior night half-undressed and behaving erratically. Polonius blames love for Hamlet's madness and resolves to inform Claudius and Gertrude. As he enters to do so, the king and queen are welcoming Rosencrantz and Guildenstern, two student acquaintances of Hamlet, to Elsinore. The royal couple has requested that the two students investigate the cause of Hamlet's mood and behaviour. Additional news requires that Polonius wait to be heard: messengers from Norway inform Claudius that the king of Norway has rebuked Prince Fortinbras for attempting to re-fight his father's battles. The forces that Fortinbras had conscripted to march against Denmark will instead be sent against Poland, though they will pass through Danish territory to ge