I was wondering why the most revered and famed writers in Tamil have only one book to their credit - I mean Kambar, Thiruvalluvar, Illango and some others too. Their hold the language should have been greatest and it is very unlikely they would have written only one right. Thiruvalluar atleast no one knows for sure when he lived, but Kambar being in the court of the one of most famous king he should have written more than Ramayanam isn't? Any clues anywhere whether they have written anything else?