With its rich literary traditions, Tamil is more unique than all other languages of the world. Tolkapiyam, the oldest surviving treatise of the classical language, formulates just not the grammar of ezhuthu (orthography), sol (etymology), yaappu (prosody) and ani (rhetoric), but porul, a treatise on ethics dealing akam and puram ( Love-themes and martial spirit) – the grammar which is hardly found in any other languages of the world.