Thirukkural

கற்றுக்கண் அஞ்சான் செலச்சொல்லிக் காலத்தால் தக்கது அறிவதாம் தூது.

Katrukkan Anjaan Selachchollik Kaalaththaal Thakkadhu Arivadhaam Thoodhu

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