Thirukkural

எனைவகையான் தேறியக் கண்ணும் வினைவகையான் வேறாகும் மாந்தர் பலர்.

Enaivakaiyaan Theriyak Kannum Vinaivakaiyaan Veraakum Maandhar Palar

Even when (a king) has tried them in every possible way, there are many men who change, from the nature of the works (in which they may be employed)