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Tamil books of law (Tamilதமிழ் நீதி நூல்கள், Tamiḻ nīti nūlkaḷ) or the more correct, Classical Tamil phrase (Tamilதமிழற நூற்கள், Tamiḻaṟa nūṟkaḷ), are didactic Tamil works aimed to promote discipline (ஒழுக்கம்) among people. They were composed with intent to propound moral guidelines, often without specific religious affiliation, hence, many consider them to be secular. They are comparable to the dharmashastra of the Vedic culture.

Late Sangam period

Post Sangam period

Middle ages