Thirukkural

அறிவினான் ஆகுவ துண்டோ பிறிதின்நோய் தந்நோய்போல் போற்றாக் கடை.

Arivinaan Aakuva Thunto Piridhinnoi Thannoipol Potraak Katai

What benefit has he derived from his knowledge, who does not endeavour to keep off pain from another as much as from himself ?