Kural - 722

Who what they've learned, in penetrating words heve learned to say,
Before the learn'd among the learn'd most learn'd are they

Explanation
Those who can agreeably set forth their acquirements before the learned will be regarded as the most learned among the learned.

Tamil Transliteration
Katraarul Katraar Enappatuvar Katraarmun
Katra Selachchollu Vaar.