Civavakiyar poems are very forceful , revolutionary and was sort of rebel against the Hindu and Brahminic establishment and most of his poems opposes the caste system and Brahminic rituals.
His work is called Civavakiyam. I have quoted some poems and its translation to give idea about his rebel attitude.
you who take always sacred baths
you who kindle sacrifical fires
you who pour in tons of ghee
hear words of wisdom
The Fires and holy waters
remember and attest
An endless undiminished light
will appear and union in oneness
The veda you recite is spit. The mantras in it are – spit.
All pleasures are but spit. All seven worlds are – spit.
Honeyed sperm is spit.Intellect is spit.Enlightment is – spit
There is nothing, indeed, nothing that is not spit!
Both poems are translated by Kamil Zvelebil
Note: The poem numbers are according to Civavakkiyam version available in Project Madurai.