Kural - 922

Drink not inebriating draught Let him count well the cost
Who drinks, by drinking, all good men's esteem is lost

Explanation
Let no liquor be drunk; if it is desired, let it be drunk by those who care not for esteem of the great.

Tamil Transliteration
Unnarka Kallai Unilunka Saandroraan
Ennap Pataventaa Thaar.