

After a lot of introspection, he decided to reconvert back into Hinduism, renamed himself as Kannadasan, dug deep into understanding Hinduism, and wrote his series of books on Hinduism titled "Arthamulla Indu Matham". He once read the Thiruppavai of Andal, and was amazed at its mystic poetry, that was to have a deep and everlasting impact on him. He had great love for the Tamil language and culture, and excelled in Tamil literature, prose and poetry.

Muthiah was a staunch atheist and a follower of the Dravidian atheistic movement. He also worked for "Thirumagal" magazine in Ramachandrapuram, Pudukkottai Distt. Kannadasan worked in "Thiraioli" a Cine magazine run by Rama.Thiyagarajan in Rayavaram.

He won the Sahitya Akademi Award for his novel Cheraman Kadali in the year 1980 and was the first ever to receive the National Film Award for Best Lyrics, given in 1969 for the film Kuzhanthaikkaga. Frequently called Kaviarasu (English: King of Poets), Kannadasan was most familiar for his song lyrics in Tamil films and contributed around 5000 lyrics besides 6000 poems and 232 books, including novels, epics, plays, essays, his most popular being the 10-part religious essay on Hinduism, captioned Arthamulla Indhumatham (English: Meaningful Hinduism). Kannadasan (Tamil: ?) was a Tamil poet and lyricist, heralded as one of the greatest and most important writers in the Tamil language.
