a pearl of wisdom

an important piece of advice

Usage notes: This phrase is usually used humorously to mean the opposite.

Thank you for that pearl of wisdom, Jerry. Now do you think you could suggest something more useful?

Name	Pronounced	Usage
Jamshed	-	Persian, Tajik, Persian Mythology
Brighid	BRIED	Irish, Irish Mythology
Wisdom	WIZ-dəm	English (Rare)
Ellanher	-	Ancient Germanic
Sabeen	-	Urdu
Muhamed	-	Bosnian