Kural - 1019

'Twill race consume if right observance fail;
'Twill every good consume if shamelessness prevail

Explanation
Want of manners injures one's family; but want of modesty injures one's character.

Tamil Transliteration
Kulanjutum Kolkai Pizhaippin Nalanjutum
Naaninmai Nindrak Katai.