Propriety of conduct is true greatness of birth, and impropriety will sink into a mean birth.
About This Kural
Thirukkural 133 is part of virtue (அறத்துப்பால்), under the chapter Discipline (ஒழுக்கமுடைமை). Written by the ancient Tamil poet Thiruvalluvar (திருவள்ளுவர்), this verse teaches timeless wisdom about virtue.