Jayarāśi Bhaṭṭa was an 8th or 9th century Indian philosopher (dated to ca. 770-830 by Franco 1994), author of the Tattvopaplavasimha (tattva-upa.plava-simha "The Lion that Devours All Categories"/"The Upsetting of All Principles"). The manuscript of this work was discovered in 1926 and published in 1940 (eds. Sanghavi and Parikh). The term Indian philosophy may refer to any of several traditions of philosophical thought, including: Hindu philosophy Buddhist philosophy Jain philosophy Sikh philosophy Carvaka atheist philosophy Lokayata materialist philosophy Tantric religious philosophy Bhakti religious philosophy Sufi religious philosophy Ahmadi religious philosophy Political and military philosophy such as that of Chanakya... According to the Indian school of Samkhya philosophy, the Tattva are a way of directly experiencing the 5 alchemical elements. ...

The text is often regarded as belonging to the Carvaka school, which would make it the only extant authentic text from that school. Werner (1995) is sceptical of that attribution, while accepting that the text is an important secondary source for Carvaka. Carvaka (also spelled Charvaka, Sanskrit ) is a system of Indian philosophy that assumed various forms of philosophical skepticism and religious indifference. ...

The Tattvopaplavasimha examines epistemology, where he considers the pramana (sources of knowledge) accepted in establishing conclusions (perception, inference, and testimony), and proves that none of them are sufficient for establishing knowledge. Inference relies on inductive reasoning, which cannot be shown to be universal premises. Testimony requires the reliability of the witness, which must be established by another of the pramana. Even direct perception cannot establish truth, because it requires that the perception not be erroneous or illusory, which also cannot be established. Therefore, Jayarasi argues that none of the sources of knowledge are valid, and nothing can be known for certain. It has been suggested that Meta-epistemology be merged into this article or section. ... Pramana (IAST ) (sources of knowledge, Sanskrit) is an epitemological term in Hindu philosophy. ... Aristotle appears first to establish the mental behaviour of induction as a category of reasoning. ...

Jayarasi challenged the astika establishment's belief in supernatural beings by attacking their epistemology. Since none of the sources of knowledge are valid, how can anything be said about these beings? Therefore, he argued for the reasonability of atheism, and that happiness in one's life is the most reasonable goal. Jayarasi represented extreme skepticism of the Carvaka school, claiming no school of philosophy can claim its view of reality as knowledge, including the Carvaka itself; however, because Carvaka philosophy represents common sense, it could be used as a guide. AstikA is a brewery making a blond pilsner with an alcohol content of 5% ABV in the cito of Haskovo, in Southern Bulgaria. ... This article is about the psychological term. ...

References

• Narayan Campawat, "Jayarasi Bhatta", in Great Thinkers of the Eastern World, Ian McGready, ed., New York: Harper Collins, 1995, pp. 202–206. ISBN 0062700855
• E. Franco, Perception, Knowledge and Disbelief: A Study of Jayarāśi's Scepticism (1994).
  • review: Karel Werner, Bulletin of the School of Oriental and African Studies, University of London (1995)