Thirukural : (திருக்குறள்) is an important work of Tamil literature by Thiruvalluvar written in a poetic form called Kural or couplets expounding various aspects of life. While most scholars place him during 100-300 BCE, there are a few who consider him to have lived c. 30 BCE. Thirukural contains 1330 couplets divided into 133 chapters of 10 couplets each. Each couplet consists of seven words, with four words on the first line and three on the second. It is sometimes claimed that Thiruvalluvar wrote more than 1330 couplets, and that the rest of the work has gone missing and also that some of the verses were later included in the compilation.