About Patiṉeṇ kīḻkkaṇakku - Nāṉmaṇikkaṭikai
Nāṉmaṇikkaṭikai contains 104 quatrains (with two invocatory verses on God Tirumāl) in veṇpā metre, each stanza containing 4 gems-like maxims. The author of this treatise is Viḷampi Nākaṉār. Several ethical works which followed have drawn heavily on this work and proved its vitality and influence.