In act 1 scene 3 of Hamlet, what is Laertes's advice to Ophelia?

In ,is
about to depart for France. Before he leaves, however, he offers his sister, , some advice about
her relationship with . Firstly, he tells her not to take too seriously the affections thathas
shown for her. He says that she should consider Hamlet's affections "a fashion and a toy in
blood." In other words, Laertes doubts that Hamlet really loves his sister, and suspects
that Hamlet's affections are a temporary consequence of youthful, hot-blooded passion. He says
that Hamlet's affections for his sister will not last, and that they are only the "perfume
and suppliance of a minute. / No more."

Laertes then tells Ophelia to
remember that Hamlet, as a member of the royal family, is "subject to his birth," and
that, therefore, whatever choice he might make as regards who becomes his wife, may not be his
choice alone. The implication is that even if Hamlet did love her, he might very well have to
disappoint her later when he has to choose a woman more suitable to take the position of
queen.

Laertes continues by implying that Hamlet might really only be
interested in having sex with Ophelia. He asks Ophelia to imagine what it would be like to have
given her "chaste treasure" (her virginity) and thus her honor to Hamlet, only for him
to subsequently tell her that he can't marry her because the country, and the royal family, want
somebody else to be the queen. Laertes implores his sister to be afraid of this eventuality, and
to bear it in mind should Hamlet ever tell her that he loves her. Laertes tells Ophelia that to
remain afraid of this outcome is the best way for her to remain chaste, and honorable, while he
is away.