India · fl. c. 800 (estimates range from 725 to 840)
Jayarāśi Bhaṭṭa
Radical sceptic who attacked every theory of valid knowledge
He took each school’s definition of valid knowledge, perception included, and showed it to be incoherent, concluding that no means of knowledge can be established. He is linked to the Lokāyata tradition, though his scepticism goes beyond standard Cārvāka materialism.
Life and thought
Jayarāśi Bhaṭṭa, who flourished around 800, probably in southern India, is known from a single work, the Tattvopaplavasiṃha, “The Lion that Devours All Categories”. It is one of the very few texts connected with the Cārvāka (Lokāyata) tradition to survive in full, and was published only in 1940. His relation to that tradition is debated, because the book is less a defence of materialism than an attack on everyone’s theory of knowledge.
Jayarāśi takes each school’s definition of a valid means of knowledge—Nyāya’s perception and inference, the Buddhist definitions of Dignāga and Dharmakīrti, Mīmāṃsā’s self-validity—and shows that it cannot be applied without circularity or regress. To know that a perception is “non-erroneous”, for example, you would need a further valid cognition, and so on without end. Since no means of knowledge can be established, no metaphysics—of soul, God, karma, or even the material elements—can be proved. The result is a radical scepticism, unusual in Indian philosophy, which treated sound knowledge as the starting point of every system.
Works
Argued against
c. 2nd c. BCE – 2nd c. CE (traditional author)Akṣapāda GautamaJayarāśi took apart Nyāya’s definitions of perception and inference one by one.c. 480–540DignāgaHis scepticism targets the Buddhist definitions of valid knowledge as well.Meanwhile, in other traditions
c. 801–873Al-KindīBaghdad polymath called “the philosopher of the Arabs”On the record
Jayarāśi flourished c. 800 and is linked to the Lokāyata tradition, though his scepticism goes beyond standard Cārvāka materialism.
Datings range from Saṃghavī’s 725–825 and Franco’s 770–830 to the 800–840 proposed in the Stanford Encyclopedia. His affiliation is debated: some read the Tattvopaplavasiṃha as a Lokāyata work, others deny he was a materialist; the encyclopedia calls him a ‘qualified sceptic’ and an atypical offshoot of the Cārvāka tradition, which matches the atlas. The title is variously rendered ‘The Lion [Destroying] the Delusion of Categories’ or ‘The Lion which Annihilates [all] Principles’.