Sivavakiyar (ca. 9th c. CE) was a Tamil poet and Siddha yogi who rebelled against the caste system and ritualised worship, as may be seen from this verse.

In bricks and in granite,
in the red-rubbed lingam*,
in copper and brass
is Siva’s abode —
     that’s what you tell us,
     and you’re wrong.
Stay where you are
and study your own selves.
Then you will BECOME
the Temple of God,
     full of His dance and spell
          and song.

*An abstract representation of Shiva

Translation Kamil V. Zvelebil