Kural - 533

'To self-oblivious men no praise'; this rule
Decisive wisdom sums of every school

Explanation
Thoughtlessness will never acquire fame; and this tenet is upheld by all treatises in the world.

Tamil Transliteration
Pochchaappaark Killai Pukazhmai Adhuulakaththu
Eppaalnoo Lorkkum Thunivu.