Kural - 724

What you have learned, in penetrating words speak out before
The learn'd; but learn what men more learn'd can teach you more

Explanation
(Ministers) should agreeably set forth their acquirements before the learned and acquire more (knowledge) from their superiors (in learning).

Tamil Transliteration
Katraarmun Katra Selachchollith Thaamkatra
Mikkaarul Mikka Kolal.