Hamlet Act 1, Scene 3

What does Laertes tell Ophelia before he leaves to France ? To watch out for Hamlet and spend less time with him to protect her reputation.
What life advice does Polonius give to Laertes ? He says “This above all: to thine own self be true.”
What does Polonius do and tell Ophelia ? He reinforces what Laertes says to Ophelia and tells her that she is not allowed to see Hamlet anymore.