Thirukkural

தொட்டனைத் தூறும் மணற்கேணி மாந்தர்க்குக் கற்றனைத் தூறும் அறிவு.

Thottanaith Thoorum Manarkeni Maandharkkuk Katranaith Thoorum Arivu

Water will flow from a well in the sand in proportion to the depth to which it is dug, and knowledge will flow from a man in proportion to his learning