Kural - 713

Unversed in councils, who essays to speak
Knows not the way of suasive words,- and all is weak

Explanation
Those who undertake to speak without knowing the (nature of the) court are ignorant of the quality of words as well as devoid of the power (of learning).

Tamil Transliteration
Avaiyariyaar Sollalmer Kolpavar Sollin
Vakaiyariyaar Valladhooum Il.