Kural - 977

Whene'er distinction lights on some unworthy head,
Then deeds of haughty insolence are bred

Explanation
Even nobility of birth, wealth and learning, if in (the possession of) the base, will (only) produce everincreasing pride.

Tamil Transliteration
Irappe Purindha Thozhitraam Sirappundhaan
Seeral Lavarkan Patin.