ShantidevaShantideva (Sanskrit: Śāntideva; ; ; Шантидэва гэгээн; Tịch Thiên) was an 8th-century CE Indian philosopher, Buddhist monk, poet, and scholar at the mahavihara of Nalanda. He was an adherent of the Mādhyamaka philosophy of Nāgārjuna. He is also considered to be one of the 84 mahasiddhas and is known as Bhusuku. The Zhansi Lun of the East Asian Mādhyamaka identifies two different individuals given the name "Shantideva": the founder of the Avaivartika Mahāyānika Sangha in 6th century CE (in Samataṭa, modern Bangladesh) and a later Shantideva who studied at Nalanda in the 8th century CE and appears to be the source of the Tibetan biographies.
AryadevaĀryadeva (fl. 3rd century CE) (; , Chinese: 提婆 菩薩 Tipo pusa, meaning Deva Bodhisattva), was a Mahayana Buddhist monk, a disciple of Nagarjuna and a Madhyamaka philosopher. Most sources agree that he was from "Siṃhala", which some scholars identify with Sri Lanka. After Nagarjuna, he is considered to be the next most important figure of the Indian Madhyamaka school. Āryadeva's writings are important sources of Madhyamaka in East Asian Buddhism. His Catuḥśataka (Four Hundred Verses) was influential on Madhyamaka in India and China and his *Śataka (Bailun, 百論, T.
Reductio ad absurdumIn logic, reductio ad absurdum (Latin for "reduction to absurdity"), also known as argumentum ad absurdum (Latin for "argument to absurdity") or apagogical arguments, is the form of argument that attempts to establish a claim by showing that the opposite scenario would lead to absurdity or contradiction. This argument form traces back to Ancient Greek philosophy and has been used throughout history in both formal mathematical and philosophical reasoning, as well as in debate. The equivalent formal rule is known as negation introduction.
BuddhapālitaBuddhapālita (; , fl. 5th-6th centuries CE) was an Indian Mahayana Buddhist commentator on the works of Nagarjuna and Aryadeva. His Mūlamadhyamaka-vṛtti is an influential commentary to the Mūlamadhyamakakarikā. Buddhapālita's commentarial approach works was criticised by his contemporary Bhāviveka, and then defended by the later Candrakīrti (c. 600–650). Later Tibetan scholasticism (11th century onwards) would characterize the two approaches as the prasaṅgika (Buddhapālita-Candrakīrti) and svatantrika (Bhāviveka's) schools of Madhyamaka philosophy (but these terms do not appear in Indian Sanskrit sources).
AjñanaAjñāna (अज्ञान) was one of the nāstika or "heterodox" schools of ancient Indian philosophy, and the ancient school of radical Indian skepticism. It was a Śramaṇa movement and a major rival of early Buddhism, Jainism and the Ājīvika school. They have been recorded in Buddhist and Jain texts. They held that it was impossible to obtain knowledge of metaphysical nature or ascertain the truth value of philosophical propositions; and even if knowledge was possible, it was useless and disadvantageous for final salvation.
