What is the significance of Polonius' advice to Laertes? What theme is emphasized here?

Question

Polonius' advice to Laertes: Polonius lives in a world of show. His instructions in social etiquette may have ethical substance but lack practical soundness for Laertes. When he speaks to Ophelia, he treats her the way one would expect a man of his time and stature to treat a daughter, as property. A woman should bring honor and fortune to her family, and the image Ophelia projects for him very much concerns Polonius. He is sure that Hamlet would never choose Ophelia to wife. Hence, he amuses himself with off-color allusions to Hamlet’s intentions and dashes any hopes she might have that her father would help her make a match. Through Polonius and Laertes, Shakespeare introduces another motif of the play: that self-indulgence and vanity often obscure familial devotion.

Answer 1

It seems you've answered your own question, unless you wish for clarification on the answer you have posted.

Answer 2

Hamlet by William Shakespeare

I have found 10+ summaries for you to look at, click the link below. I have included a short extract to give you a taste of what the reviews have to offer.

http://litsum.com/hamlet/

http://www.antistudy.com/search.php?title=Hamlet+

http://www.freebooknotes.com/book.php3?id=167

http://www.theatrehistory.com/british/hamlet001.html

http://www.clicknotes.com/

http://www.jiffynotes.com/Hamlet/HistoricalContext.html

An analysis of the play by Shakespeare

http://www.theatrehistory.com/british/hamlet001.html

Characters
.
Protagonist: Hamlet

Antagonist: Claudius

Foils of Hamlet: Laertes, Fortinbras, Polonius

Hamlet: Son of a murdered Danish king (who was also named Hamlet) and nephew of the present king, Claudius. Hamlet suffers great mental anguish over the death of his father, the marriage of his mother to the suspected murderer (Claudius), and the clash between his moral sense and his desire for revenge against his father’s murderer.

http://www.cummingsstudyguides.net/xHamlet.html#Hamlet

Enjoying "Hamlet" by William Shakespeare

http://www.tk421.net/hamlet/hamlet.html

http://www.lynchmultimedia.com/hamlet_parallel.html

http://www.pathguy.com/hamlet.htm

Good luck.

Kevin, Liverpool, England.