Kural - 823

To heartfelt goodness men ignoble hardly may attain,
Although abundant stores of goodly lore they gain

Explanation
Though (one's) enemies may have mastered many good books, it will be impossible for them to become truly loving at heart.

Tamil Transliteration
Palanalla Katrak Kataiththu Mananallar
Aakudhal Maanaark Karidhu.