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Yajnavalkya or Yagyavalkya (,
IAST The International Alphabet of Sanskrit Transliteration (IAST) is a transliteration scheme that allows the lossless romanisation of Brahmic family, Indic scripts as employed by Sanskrit and related Indic languages. It is based on a scheme that ...
:) is a
Hindu Hindus (; ; also known as Sanātanīs) are people who religiously adhere to Hinduism, also known by its endonym Sanātana Dharma. Jeffery D. Long (2007), A Vision for Hinduism, IB Tauris, , pp. 35–37 Historically, the term has also be ...
Vedic sage prominently mentioned in the
Brihadaranyaka Upanishad The ''Brihadaranyaka Upanishad'' (, ) is one of the Mukhya Upanishads, Principal Upanishads and one of the first Upanishadic scriptures of Hinduism. A key scripture to various schools of Hinduism, the ''Brihadaranyaka Upanisad'' is tenth in the ...
(c. 700 BCE) and ''Tattiriya Upanishad''., Quote: "Yajnavalkya, a Vedic sage, taught..."Ben-Ami Scharfstein (1998), ''A comparative history of world philosophy: from the Upanishads to Kant'', Albany: State University of New York Press, pp. 9-11 Yajnavalkya proposes and debates
metaphysical Metaphysics is the branch of philosophy that examines the basic structure of reality. It is traditionally seen as the study of mind-independent features of the world, but some theorists view it as an inquiry into the conceptual framework of h ...
questions about the nature of existence, consciousness and impermanence, and expounds the
epistemic Epistemology is the branch of philosophy that examines the nature, origin, and limits of knowledge. Also called "the theory of knowledge", it explores different types of knowledge, such as propositional knowledge about facts, practical knowledg ...
doctrine of neti neti ("not this, not this") to discover the universal Self and Ātman. Texts attributed to him include the '' Yajnavalkya Smriti'', '' Yoga Yajnavalkya'' and some texts of the
Vedanta ''Vedanta'' (; , ), also known as ''Uttara Mīmāṃsā'', is one of the six orthodox (Āstika and nāstika, ''āstika'') traditions of Hindu philosophy and textual exegesis. The word ''Vedanta'' means 'conclusion of the Vedas', and encompa ...
school. He is also mentioned in the ''
Mahabharata The ''Mahābhārata'' ( ; , , ) is one of the two major Sanskrit Indian epic poetry, epics of ancient India revered as Smriti texts in Hinduism, the other being the ''Ramayana, Rāmāyaṇa''. It narrates the events and aftermath of the Kuru ...
'' as well as various ,
Brahmana The Brahmanas (; Sanskrit: , International Alphabet of Sanskrit Transliteration, IAST: ''Brāhmaṇam'') are Vedas, Vedic śruti works attached to the Samhitas (hymns and mantras) of the Rigveda, Rig, Samaveda, Sama, Yajurveda, Yajur, and Athar ...
s and
Aranyaka The ''Aranyakas'' (; ; IAST: ') are a part of the ancient Indian Vedas concerned with the meaning of ritual sacrifice, composed in about 700 BC. They typically represent the later sections of the Vedas, and are one of many layers of Vedic text ...
s.


Name

The name Yajnavalkya is derived from ''
yajna In Hinduism, ''Yajna'' or ''Yagna'' (, Help:IPA/Sanskrit, ɐd͡ʒɲə ) also known as Hawan, is a ritual done in front of a sacred fire, often with mantras. Yajna has been a Vedas, Vedic tradition, described in a layer of Vedic literature ...
'', which connotes ritual.


Depiction in texts

Yajnavalkya was a pupil of Vaisampayana and the compiler of the ''Shukla Yajurveda Samhita''. Yajnavalkya was the pupil of
Uddālaka Āruṇi Uddalaka Aruni (fl. c. 8th century BCE), (Devanagari: उद्दालक आरुणि) also referred to as Uddalaka or Aruni or Uddalaka Varuni, was a revered Vedic sage of Hinduism.Ben-Ami Scharfstein (1998), A comparative history of worl ...
, whom he defeated in debate. Within both the ''Sukla Yajur Veda'' and the ''Brihadaranyaka Upanishad'', he is depicted as being blunt, provocative and sarcastic. In the first verse of the ''Yajnavalkya Smriti'', Yajnavalkya is described as the "yogesvara: meaning "the king of yogis." Yajnavalkya plays a central position in a debate known as Bahudakshina Yajna hosted by King Janaka in
Mithila Mithila may refer to: Places * Mithilā, a synonym for the ancient Videha state ** Mithilā (ancient city), the ancient capital city of Videha * Mithila (region), a cultural region (historical and contemporary), now divided between India and Nepa ...
, Videha, which is in the east of India, where Yajnavalkya defeats philosophers from all around the country. The debate ended with Gargi, a female scholar and one of the nine gems of King Janaka’s court, clearly asserting Yajnavalkya as the most superior brahmin of them all. In the ''Brihadaranyaka Upanishad'', a set of dialogues portrays Yajnavalkya as having two wives, Maitreyi and Katyayani. Maitreyi, as opposed to Katyayani, was more intrigued to gain spiritual knowledge. Maitreyi was known as a brahmavadini, a discusser of Brahman. Katyayani is merely described as "striprajna," which translates to "woman-like knowledge;" this can be interpreted as one who is well-versed in traditionally females roles. While Yajnavalkya and Katyayani lived in contented domesticity, Maitreyi studied metaphysics and engaged in theological dialogues with her husband in addition to "making self-inquiries of introspection."John Muir, , page 246–251 In contrast to the ''Brihadaranyaka Upanishad'', the epic ''
Mahabharata The ''Mahābhārata'' ( ; , , ) is one of the two major Sanskrit Indian epic poetry, epics of ancient India revered as Smriti texts in Hinduism, the other being the ''Ramayana, Rāmāyaṇa''. It narrates the events and aftermath of the Kuru ...
'' states Maitreyi is a young beauty who is an Advaita scholar but never marries.John Muir, , pp. 251–253 Scharfstein considers Yajnavalkya to be one of the earliest philosophers in
recorded history Recorded history or written history describes the historical events that have been recorded in a written form or other documented communication which are subsequently evaluated by historians using the historical method. For broader world h ...
. Yajnavalkya is credited by Witzel for coining the term '' Advaita'' (non-duality of Atman and Brahman). The ideas attributed to him for renunciation of worldly attachments have been important to Hindu
sannyasa ''Sannyasa'' (), sometimes spelled ''sanyasa'', is the fourth stage within the Hinduism, Hindu system of four life stages known as ''ashrama (stage), ashramas'', the first three being ''brahmacharya'' (celibate student), ''Gṛhastha, grihast ...
traditions.


Scriptural references

Yajnavalkya is associated with several major ancient texts in Sanskrit, namely the ''
Shukla Yajurveda The ''Yajurveda'' (, , from यजुस्, "worship", and वेद, "knowledge") is the Veda primarily of prose mantras for worship rituals.Michael Witzel (2003), "Vedas and Upaniṣads", in ''The Blackwell Companion to Hinduism'' (Edito ...
'', the ''
Shatapatha Brahmana The Shatapatha Brahmana (, , abbreviated to 'SB') is a commentary on the Yajurveda, Śukla Yajurveda. It is attributed to the Vedic sage Yajnavalkya. Described as the most complete, systematic, and important of the Brahmanas (commentaries on the ...
'', the ''Brihadaranyaka Upanishad'', the ''Taittiriya Upanishad'', the dharma sastra named ''
Yājñavalkya Smṛti The ''Yajnavalkya Smriti'' (, IAST: ') is one of the many Dharma-related texts of Hinduism composed in Sanskrit. It is dated between the 3rd and 5th century CE, and belongs to the Dharmashastra tradition. The text was composed after the Manusmr ...
'', ''Vriddha Yajnavalkya'', and ''Brihad Yajnavalkya''.I Fisher (1984), Yajnavalkya in the Sruti traditions of the Veda, ''Acta Orientalia'', Volume 45, pages 55–87 He is also mentioned in the ''Mahabharata,'' Puranas,Vishwanath Narayan Mandlik, , pages lvi, xlviii–lix as well as in ancient
Jainism Jainism ( ), also known as Jain Dharma, is an Indian religions, Indian religion whose three main pillars are nonviolence (), asceticism (), and a rejection of all simplistic and one-sided views of truth and reality (). Jainism traces its s ...
texts such as the '' Isibhasiyaim''. In the Jainism text Isibhasiyaim, the sage Yajnavalkya is also known as ''Jannavakka''.


''Taittiriya Upanishad''

Yajnavalkya is referenced within the ''Taittiriya Upanishad''. Once, the guru Vaisampayana got angry with Yajnavalkya, who was one of his leading disciples. He demanded that Yajnavalkya give back all of his knowledge he had learned from him. With such instructions, Yajnavalkya vomited all of the knowledge. The guru then instructed his other disciples to take the form of partridges (i.e., taittiriya birds) and consume what was regurgitated. This story is why the Upanishad was named the Taittiriya Upanishad. The story is meant to show Yajnavalkya’s genius. Yajnavalkya was also said to have taken the guru’s knowledge and to have added his own insight. Seeing such knowledge, the guru was pleased and instructed his other disciples to learn from Yajnavalkya. A student is encouraged to be active for a thirst of knowledge like Taittiriya birds through this metaphor.


''Brihadaranyanka Upanishad''

The ''
Brihadaranyaka Upanishad The ''Brihadaranyaka Upanishad'' (, ) is one of the Mukhya Upanishads, Principal Upanishads and one of the first Upanishadic scriptures of Hinduism. A key scripture to various schools of Hinduism, the ''Brihadaranyaka Upanisad'' is tenth in the ...
'' is dated at c. 700 BCE. The ''Brihadaranyaka Upanishad'' is known for highlighting Yajnavalkya’s magnetic personality, focusing on his self-confidence. Yajnavalkya plays a central position within the ''Brihadaranyaka Upanisad'', which is a part of the ''Sukla Yajur Veda''. The scripture details one of the most famous debates in Hindu texts in the presence of King Janaka in Mithila, Videha, which is in the east of India, where Yajnavalkya defeats philosophers from all around the country. In the first story of the ''Brihadaranyak Upanisad'', King Janaka hosts a sacrifice known as Bahudakshina Yajna, where he is willing to donate one thousand cows with gold horns to the best brahmin called as Brahmistha. Yajnavalkya immediately orders his disciple Samasrava to take the cows to his home. This causes an uproar in the palace amongst the other sages, led by Asvala, who wondered why Yajnavalkya proclaimed himself as the greatest. Yajnavalkya responds saying that he does not claim himself to be the greatest ''Brahmistha'' and whoever the greatest Brahmistha is should indeed be honoured. Yajnavalkya says he merely just wanted the cows. This leads to a philosophical debate amongst the sages, in which Yajnavalkya defeats each opponent who faces him by rightly answering their questions. Some of the key participants of the debate include Asvala, Uddalaka Aruni, Bhujyu, Sakalya, Artabhaga, Ushasta, Kahola and others, many who are well known within other Hindu literature. Gargi later appears in two sections of the debate in sections 3.6 and 3.8 of the ''Brihadaranyaka Upanisad''. Gargi was a female scholar and she was one of the nine gems of King Janaka’s court. In 3.6, Gargi successively asks about what is the support or cause of different elements in the world, setting up a hierarchical ordering of the world. Gargi finally asks about the support of
Brahman In Hinduism, ''Brahman'' (; IAST: ''Brahman'') connotes the highest universal principle, the ultimate reality of the universe.P. T. Raju (2006), ''Idealistic Thought of India'', Routledge, , page 426 and Conclusion chapter part XII In the ...
. Yajnavalkya responds, "Do not, O Gargi, question too much, lest your head should fall off. You are questioning too much about a deity whom we should not ask too much." Yajnavalkya threatens Gargi not to ask what is beyond Brahman. Gargi becomes silent. Yajnavalkya intended to explain that one cannot question who is the support of that which is the support of everything. Yajnavalkya’s threat is not produced out coercion to halt the asking of complex questions, but to end a discussion that had become finite, which Gargi had not realized yet. In 3.8, Gargi asks a final series of questions to Yajnavalkya proclaiming that if he can answer these questions, no other brahmin could beat him in this debate. This time, it is seen that Gargi’s rhetoric has shifted; rather than asking questions impetuously or over-eagerly like that in 3.6, Gargi’s questioning becomes more pointed and focused at reaching the pinnacle of the debate through a final test. She first asks, "That which is above the sky, that which is below earth, that which is between the sky and earth, and that which people call the past, present, and future – hat is the support of this all" Yajnavalkya responds by saying that the support of this is space. Gargi then asks what is the support of space. Yajnavalkya responds by discussing the metaphysical element known as Akshar (''Brihadaryanka Upanishad'' 3.8.8-9), or that which is imperishable. Yajnavalkya says, "This imperishable, Gargi, is the seer but isn’t seen; is the hearer, but isn’t heard; is the thinker, but isn’t thought of; is the perceiver, but isn’t perceived. Other than this, there is no seer. Other than this, there is no hearer. Other than this, there is no thinker. Other than this, there is no perceiver." Gargi’s scholarship is depicted through the fact that she is the first person in the entire debate to discuss the concept of Brahman. The debate ends when Gargi, a female scholar, clearly asserts Yajnavalkya as the most superior of them all. In the fourth chapter of the ''Brihadaranyaka Upanisad'', Yajnavalkya decides to renounce and leave his family. At that time, Yajnavalkya’s wife, Maitreyi, inquires about the concept of the soul to Yajnavalkya. Maitreiyi, was also very wise and scholarly. She had once asked Yajnavalkya if she would become immortal with all the wealth in the world, in which Yajnavalkya responded with a denial. She then preaches, “"What should I do with that by which I do not become immortal?" The ''Brihadaranyaka Upanisad'' is one of the first texts to depict women in religious debate. Both Gargi and Maitreyi discuss the deepest spiritual topics of the ''Brihadaranyaka Upanisad'', namely about Brahman and the atman, showing their knowledge and curiosity.


Works


''Sukla Yajur Veda''

Yajnavalkya was the seer of who received the Shukla Yajurveda from the Divine. Thus, he is known as the founder of the Sukla Yujurveda tradition. Yajnavalkya himself mentions, “Anyone who desires to master yoga should know the Aranyaka that I received from the sun as well as the yoga treatise that I proclaimed.” (Yajnavalkya Smriti 3.110).


''Yajnavalkya Smriti''

The ''Yagnavalkya Smriti'' provides instructions to people of all walks of life, including brahmins. It is written as a discourse from Yajnavalka to his sagely disciples about the laws or dharmas of society. The scripture is broken into three sections discussing: (1) achara (i.e., behavior), (2) vyavahara (i.e., legal procedure), and (3) prayascita (i.e., atonement). In the second section, Yagnavalkya breaks down the entire court process into four steps: plaint, plea, evidence and verdict. In the third section, Yajnavalkya claims that through prayascita, the soul and the world are pleased. (''Yajnavalkya Smriti'' 3.20). The ''Yajnavalkya Smriti'' is often comparable to a priorly written dharma sastra, the ''Manu Smriti''. Both the Manu Smriti and ''Yajnavalkya Smriti'' are considered the ultimate sources of Hindu Law, however, Yagnavalkya’s smriti was considered more authoritative than that of Manu’s. Although both works are similar, Yajnavalkya places less emphasis on rigidity and more focus on practicality. Yajnavalkya’s smriti is also more precise and organized than that of Manu’s. The British also considered the ''Yajnavalkya Smriti'' the basis of what they called “the Hindu Law.” The ''Yajnavalkya Smriti'' became even more well-known through a commentary written on it by Vijnaneshvara called the ''Mitakshara'' in the mid-twelfth century.


''Yoga Yajnavalkya''

The ''Yoga Yajnavalkya'' is a commentary by Yajnavalkya on the knowledge of Yoga. The actual author of ''Yoga Yajnavalkya'' text was probably someone who lived many centuries after the Vedic sage Yajnavalkya. Ian Whicher, a professor of Religion at the University of Manitoba, states that the author of ''Yoga Yajnavalkya'' may be an ancient Yajnavalkya, but this Yajnavalkya is not to be confused with the Vedic-era Yajnavalkya "who is revered in Hinduism for ''Brihadaranyaka Upanishad''". According to Vishwanath Narayan Mandlik, these references to Yajnavalkya in other texts, in addition to the eponymous ''Yoga Yajnavalkya'', may be two different sages with the same name.


Ideas


On karma and rebirth

One of the early expositions of
karma Karma (, from , ; ) is an ancient Indian concept that refers to an action, work, or deed, and its effect or consequences. In Indian religions, the term more specifically refers to a principle of cause and effect, often descriptively called ...
and rebirth theories appears in the discussions of Yajnavalkya.
Max Muller Max or MAX may refer to: Animals * Max (American dog) (1983–2013), at one time purported to be the world's oldest living dog * Max (British dog), the first pet dog to win the PDSA Order of Merit (animal equivalent of the OBE) * Max (gorilla) ( ...
and
Paul Deussen Paul Jakob Deussen (; 7 January 1845 – 6 July 1919) was a German Indologist and professor of philosophy at University of Kiel. Strongly influenced by Arthur Schopenhauer, Deussen was a friend of Friedrich Nietzsche and Swami Vivekananda. In ...
, in their respective translations, describe the Upanishad's view of "Soul, Self" and "free, liberated state of existence" as, "
elf An elf (: elves) is a type of humanoid supernatural being in Germanic peoples, Germanic folklore. Elves appear especially in Norse mythology, North Germanic mythology, being mentioned in the Icelandic ''Poetic Edda'' and the ''Prose Edda'' ...
is imperishable, for he cannot perish; he is unattached, for he does not attach himself; unfettered, he does not suffer, he does not fail. He is beyond good and evil, and neither what he has done, nor what he has omitted to do, affects him. (...) He therefore who knows it eached self-realization becomes quiet, subdued, satisfied, patient, and collected. He sees self in Self, sees all as Self. Evil does not overcome him, he overcomes all evil. Evil does not burn him, he burns all evil. Free from evil, free from spots, free from doubt, he became Atman-Brâhmana; this is the Brahma-world, O King, thus spoke Yajnavalkya."Paul Deussen, Sixty Upanishads of the Veda, Volume 1, Motilal Banarsidass, , pages 475-507


On spiritual liberation

The section 4.3 of the ''Brihadaranyaka Upanishad'' is attributed to Yajnavalkya. It has a dialogue between
Janaka Janaka (, IAST: ''Janaka'') is the King of Videha who ruled from Mithila (region), Mithila, in the Hindu epic ''Ramayana''. Janaka was married to Sunayana (Ramayana), Sunayana. He is the father of Sita and Urmila in the epic. The term Janaka ...
and Yajnavalkya exploring the nature of the Atman in different states of consciousness and existence, including wakefulness, dream, deep sleep, death, migration, and final liberation. It discusses the premises of
moksha ''Moksha'' (; , '), also called ''vimoksha'', ''vimukti'', and ''mukti'', is a term in Jainism, Buddhism, Hinduism, and Sikhism for various forms of emancipation, liberation, '' nirvana'', or release. In its soteriological and eschatologic ...
(liberation, freedom), and provides some of its most studied hymns. Paul Deussen calls it, "unique in its richness and warmth of presentation", with profoundness that retains its full worth in modern times.


On the light of man

When asked by King Janaka,"What is the light of man?" he replies, "The sun, O King; for, having the sun alone for his light, man sits, moves about, does his work, and returns." Then the king asks, "When the sun sets, what is the light of man?" He replies, "The moon indeed is his light; for, having the moon alone for his light, man sits, moves about, does his work, and returns." Then the king asks, "When the sun has set, O Yajnavalkya, and the moon has set, what is the light of man ?" He replies, "Fire indeed is his light; for, having fire alone for his light, man sits, moves about, does his work, and returns." Then the king asks, "When the sun has set, O Yajnavalkya, and the moon has set, and the fire is gone out, what is then the light of man?" He replies, "Sound indeed is his light; for, having sound alone for his light, man sits, moves about, does his work, and returns. Therefore, O King, when one cannot see even one's own hand, yet when a sound is raised, one goes towards it." Then the king asks, "When the sun has set, O Yajnaavalkya, and the moon has set, and the fire is gone out, and the sound hushed, what is then the light of man?" He replies, "The Self indeed is his light; for, having the Self alone as his light, man sits, moves about, does his work, and returns."


On the self

He describes the self by a series of negations and says it is not, not (neti, neti) - not graspable, not destructible, not attached, not disturbed by anything good or bad done by himself. He then says, he who knows this truth remains "controlled, at peace, patient and full of faith" and "everyone comes to be his self" and "he becomes the self of everyone"


On dreams

Yajnavlkya believed that dreams are active projections of the self. To him, this is evidence that dreaming shares the creative nature of Reality in itself.


On love and soul

The Maitreyi-Yajnavalkya dialogue in the ''
Brihadaranyaka Upanishad The ''Brihadaranyaka Upanishad'' (, ) is one of the Mukhya Upanishads, Principal Upanishads and one of the first Upanishadic scriptures of Hinduism. A key scripture to various schools of Hinduism, the ''Brihadaranyaka Upanisad'' is tenth in the ...
'' states that love is driven by "love for oneself (''ātman'')," and discusses the nature of Atman and Brahman and their unity, which forms the core of later Advaita philosophy. The dialogue has survived in two manuscript
recension Recension is the practice of editing or revising a text based on critical analysis. When referring to manuscripts, this may be a revision by another author. The term is derived from the Latin ("review, analysis"). In textual criticism (as is the ...
s from the Madhyamdina and Kanva Vedic schools. Although they have significant literary differences, they share the same philosophical theme. This dialogue appears in several Hindu texts; the earliest is in chapter 2.4 – and modified in chapter 4.5 – of the ''Brihadaranyaka Upanishad'', one of the principal and oldest
Upanishads The Upanishads (; , , ) are late Vedic and post-Vedic Sanskrit texts that "document the transition from the archaic ritualism of the Veda into new religious ideas and institutions" and the emergence of the central religious concepts of Hind ...
. Adi Shankara, a scholar of the influential Advaita Vedanta school of Hindu philosophy, wrote in his ''Brihadaranyakopanishad bhashya'' that the purpose of the Maitreyi-Yajnavalkya dialogue in chapter 2.4 of the ''Brihadaranyaka Upanishad'' is to highlight the importance of the knowledge of Atman and Brahman, and to understand their oneness. According to Shankara, the dialogue suggests renunciation is prescribed in the '' Sruti'' (vedic texts of Hinduism), as a means to knowledge of the Brahman and Atman. He adds, that the pursuit of self-knowledge is considered important in the ''Sruti'' because the Maitreyi dialogue is repeated in chapter 4.5 as a "logical finale" to the discussion of Brahman in the Upanishad. Concluding his dialogue on the "inner self", or soul, Yajnavalkaya tells Maitreyi:


On dharma

In Yajnavalkya Smriti, Yajnavalkya emphasizes the plurality of dharma, drawing from multiple sources including the Vedas, recollections, righteous conduct, self-satisfaction, and desire rooted in right intention. He introduces the idea that fulfilling desires with the right intention is part of dharma, a departure from previous texts. Yajnavalkya emphasizes the significance of gift-giving (''dana'') and yoga in dharma, considering them central practices. He suggests that those who understand the self hold superior knowledge of dharma. Yajnavalkya categorizes dharma into three divisions, covering everyday life, royal conduct, and extraordinary circumstances. He recognizes that not all dharma originates from Vedic sources; some are derived from worldly customs or enforced by rulers.


See also

* Neti neti * Ancient Mithila University *
Janaka Janaka (, IAST: ''Janaka'') is the King of Videha who ruled from Mithila (region), Mithila, in the Hindu epic ''Ramayana''. Janaka was married to Sunayana (Ramayana), Sunayana. He is the father of Sita and Urmila in the epic. The term Janaka ...
of
Videha Videha ( Prākrit: ; Pāli: ; Sanskrit: ) was an ancient Indo-Aryan tribe of north-eastern Indian subcontinent whose existence is attested during the Iron Age. The population of Videha, the Vaidehas, were initially organised into a monarchy ...
* Gargi Vachaknavi * Uddalaka Aruni *
Ashtavakra Ashtavakra (, ) is a revered Vedic sage in Hinduism. His maternal grandfather was the Vedic sage Aruni, his parents were both Vedic students at Aruni's school. Ashtavakra studied, became a sage and a celebrated character of the Hindu Itihasa ...
* Yajnavalkya Ashram * Durwakshat Mantra


References


Bibliography

* * * * * * * * * * *


External links

* *
Sukla Yajur Veda
from http://www.shuklayajurveda.org

{{DEFAULTSORT:Yajnavalkya 7th-century BC people 8th-century BC people People from Videha Rishis Ancient Indian philosophers Scholars from Bihar 8th-century BC Indian philosophers 7th-century BC Indian philosophers 7th-century BC mathematicians Maithil Brahmin Upanishadic people 8th-century BC Hindus 7th-century BC Hindus