What advice does Ophelia give to Laertes?

Answer 1

In Act 1 Scene 3 of Hamlet, both Laertes and Polonius advise Ophelia to stop seeing Hamlet, in their own ways. Laertes, as Ophelia's brother, gives the explanation that Hamlet, as heir to the throne of Denmark, must ultimately do what benefits the country. That means that though he may love Ophelia now, he will never be able to marry her because she is not of royal blood so it would not reflect well on the country, and because Denmark must come first, their relationship is doomed to end. Laertes says that Hamlet's affections for Ophelia are essentially flirtation and are going nowhere. (Of course he is dead wrong about Ophelia's chances of marrying Hamlet. At her funeral Gertrude says "I hoped thou shouldst have been my Hamlet's wife.")

Polonius, Ophelia's father, gives the same advice for a different reason. He basically says that Hamlet is a young guy and offers her affection because he wants her, not because he loves her. He advises that Ophelia should stop seeing Hamlet because what she thinks is love is simply lust.

Answer 2

"Do not, as some ungracious pastors do, show me the steep and thorny way to heaven whilst like a puffed and reckless libertine himself the primrose path of dalliance treads and recks not his own rede." Basically she is telling him to put his money where his mouth is and not to be a hypocrite.