Kural - 723

Many encountering death in face of foe will hold their ground;
Who speak undaunted in the council hall are rarely found

Explanation
Many indeed may (fearlessly) die in the presence of (their) foes; (but) few are those who are fearless in the assembly (of the learned).

Tamil Transliteration
Pakaiyakaththuch Chaavaar Eliyar Ariyar
Avaiyakaththu Anjaa Thavar.