Quote I was Sharing From All’s Well That Ends Well.

A couple of years ago, I started sharing this quote from Shakespeare's All’s Well That Ends Well everywhere:

’Tis an unseasoned courtier. Good my lord,
Advise him.

I have no idea what it means either (I just found it on a random page in my complete works of Shakespeare in my basement). (Actually, a unseasoned courtier is noble debutant, and the countess is telling Lafew to show him the ways of polite society.)