Kural - 686

An envoy meet is he, well-learned, of fearless eye
Who speaks right home, prepared for each emergency

Explanation
He is an ambassador who having studied (politics) talks impressively, is not afraid of angry looks, and knows (to employ) the art suited to the time.

Tamil Transliteration
Katrukkan Anjaan Selachchollik Kaalaththaal
Thakkadhu Arivadhaam Thoodhu.