King Claudius and Queen Gertrude order Hamlet’s childhood friends Guildenstern and Rosencrantz to spy on Hamlet. “I entreat you both… to gather / So much as from occasion you may glean” (Shakespeare II.ii 10-16)
Line 182: Enter Hamlet Reading
Polonius hints that he knows the source of Hamlet’s madness, and brings in ambassadors Voltemand and Cornelius who inform Claudius that Norway intends to attack Poland rather than Denmark. “Makes vow before his uncle never more / To give th’ assay of arms against your Majesty.” (II.ii 74-75).
Line 238: Enter Guildenstern and Rosencrantz
Polonius informs the King and Queen that Hamlet’s unrequited love for Ophelia is the source of his madness. “She took the fruits of my advice, / And he, repelled (a short tale to make), / Fell into a sadness, then into a fast… Into the madness wherein now he raves” (II.ii 154-159)
Line 339: Rosencrantz: "To think my lord"
After conversing with Hamlet, while Polonius acknowledges that Hamlet is mad, he is impressed by Hamlet’s words and decides to let Ophelia and Hamlet be together. “How / pregnant sometimes his replies are! … I will leave him… and my daughter” (II.ii 227-231)
After encountering his childhood friends, Hamlet accuses Guildenstern and Rosencrantz of being sent to survey him. Guildenstern and Rosencrantz quickly admit their intentions for coming to see him. “My lord, we were sent for” (II.ii 315)
Rosencrantz and Guildenstern tell Hamlet they saw an acting group coming to the castle. “We coted [the players] on the way, and / hither are they coming to offer you service” (II.ii 341-342)