Thirukkural 607

இடிபுரிந்து எள்ளுஞ்சொல் கேட்பர் மடிபுரிந்து மாண்ட உஞற்றி லவர்.

Idi purindhu ellum sol ketpar madi purindhu Manda unpatri lavar

Those who are steadfast in their conduct will hear even contemptuous words as thunder—mere noise. Those of weak resolve are shaken by every slight.