<P> In Act 1, Scene 3, Polonius gives advice to his son Laertes, who is leaving for France, in the form of a list of sententious maxims . He finishes by giving his son his blessing, and is apparently at ease with his son's departure . However, in Act 2, Scene 1, he orders his servant Reynaldo to travel to Paris and spy on Laertes and report if he is indulging in any local vice . </P> <P> Laertes is not the only character Polonius spies upon . He is fearful that Hamlet's relationship with his daughter will hurt his reputation with the king and instructs Ophelia to "lock herself from (Hamlet's) resort". He later suspects that Ophelia's rejection of Hamlet's attention has caused the prince to lose his wits, and informs Gertrude and Claudius of his suspicion, claiming that his reason for commanding Ophelia to reject Hamlet was that the prince was above her station . He and the king test his hypothesis by spying on and interrogating Ophelia . </P> <P> In his last attempt to spy on Hamlet, Polonius hides himself behind an arras in Gertrude's room . Hamlet deals roughly with his mother, causing her to cry for help . Polonius echoes the request for help and is heard by Hamlet, who then mistakes the voice for Claudius' and stabs through the arras and kills him . </P> <P> Polonius' death at the hands of Hamlet causes Claudius to fear for his own life, Ophelia to go mad, and Laertes to seek revenge, which leads to the duel in the final act . </P>

What role did polonius play when he was at the university