Before revision: A variant of the tetralemma is used in the Ancient Greek philosophical schools of DemocritusDemocritus: 5.
After revision: Though tetralemma was also used as a form inquiry rather than logic in the nasadiya sukta of rigveda (creation hymm) though seems to be rarely used as a tool of logic before buddhismA variant of the tetralemma is used in the Ancient Greek philosophical schools of DemocritusDemocritus: 5.