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
Fina	FEE-nah	Italian
Emmerson	EM-ər-sən	English (Rare)
Tekla	-	Georgian, Hungarian
Ameqran	-	Northern African, Berber
Alekto	-	Greek Mythology
Germaine	[dʒe'mein]