some one explain please?

Question

The wind sits in the shoulder of your sail,
And you are stay'd for. There; my blessing with thee!
And these few precepts in thy memory
See thou character. Give thy thoughts no tongue,
Nor any unproportioned thought his act.
Be thou familiar, but by no means vulgar.
Those friends thou hast, and their adoption tried,
Grapple them to thy soul with hoops of steel;
But do not dull thy palm with entertainment
Of each new-hatch'd, unfledged comrade. Beware
Of entrance to a quarrel, but being in,
Bear't that the opposed may beware of thee.
Give every man thy ear, but few thy voice;
Take each man's censure, but reserve thy judgment.
Costly thy habit as thy purse can buy,
But not express'd in fancy; rich, not gaudy;
For the apparel oft proclaims the man,
And they in France of the best rank and station
Are of a most select and generous chief in that.
Neither a borrower nor a lender be;
For loan oft loses both itself and friend,
And borrowing dulls the edge of husbandry.
This above all: to thine ownself be true,
And it must follow, as the night the day,
Thou canst not then be false to any man.
Farewell: my blessing season this in thee!

Answer 1

This is a piece from Shakespeare where Polonius is giving advice to his son Laertes. It is a list of rules or ways to behave

The wind sits in the shoulder of your sail,
And you are stay'd for. There; my blessing with thee!

(Telling him that he is in a position of advantage)

And these few precepts in thy memory

(Remember what I say)

See thou character. Give thy thoughts no tongue,
Nor any unproportioned thought his act.

(Don't speak without thinking what you say)

Be thou familiar, but by no means vulgar.

(Be polite rather than falsly friendly)

Those friends thou hast, and their adoption tried,
Grapple them to thy soul with hoops of steel;

(Keep your real friends, guard their friendship closely)

But do not dull thy palm with entertainment
Of each new-hatch'd, unfledged comrade.

(Be careful of false friends who are familiar before they really know you)

Beware
Of entrance to a quarrel, but being in,
Bear't that the opposed may beware of thee.

(Be careful in starting arguments as the other person may have the advantage)

Give every man thy ear, but few thy voice;
Take each man's censure, but reserve thy judgment.

(Listen to other people without giving advice easily. If criticised listen but make your own judgement)

Costly thy habit as thy purse can buy,
But not express'd in fancy; rich, not gaudy;
For the apparel oft proclaims the man,
And they in France of the best rank and station
Are of a most select and generous chief in that.

(Wear the best clothes you can afford, but not too ostenatatious as dressing well conveys a favourable impression)
Neither a borrower nor a lender be;
For loan oft loses both itself and friend,
And borrowing dulls the edge of husbandry.

(Do not borrow or lend money as it could cause resenttment and lose friends)

This above all: to thine ownself be true,
And it must follow, as the night the day,
Thou canst not then be false to any man.

(Do not deceive yourself as by not doing you will not be decptive to others)

Farewell: my blessing season this in thee!

Hope that helps

Answer 2

Lots of good advice on how to treat your friends! Like "give every man thy ear...." be a good listener; "apparel oft proclaims..." your dress describes you..."borrowing dulls.."don't lend your friend money..etc.