| Quote #4
[…] but you must fear,
Laertes tells Ophelia that Hamlet can't marry who he wants to—he has to marry for the "safety" of the entire "state." And he's right. If you were rich and powerful in the 16th century, your marriage was an opportunity to forge strategic political, social, and economic alliances. In other words, Laertes insists that a marriage between Ophelia and Hamlet is impossible. Marrying for love? That was for the commoners.
| Quote #5
[…] Then if he says he loves you,
Here, Laertes tells Ophelia that, if she sleeps with Hamlet, she'll lose her honor. But this isn't a moral argument on the ethics of premarital sex. He's talking about the way Ophelia's chances for a future marriage could be compromised—which is literally a matter of life or death for a young woman.
| Quote #6
Ophelia isn't actually agreeing here; she's just acknowledging that she has to obey Polonius. Parents in this play (and in powerful families of the Early Modern period) weren't necessarily interested in helping their kids develop to their fullest potential, or whatever the helicopter parenting line is now; they saw their kids as pawns in the game of life.