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The Upanishads (; sa, उपनिषद् ) are late Vedic Sanskrit texts that supplied the basis of later
Hindu philosophy Hindu philosophy encompasses the philosophies, world views and teachings of Hinduism that emerged in Ancient India which include six systems ('' shad-darśana'') – Samkhya, Yoga, Nyaya, Vaisheshika, Mimamsa and Vedanta.Andrew Nicholson ( ...
.Wendy Doniger (1990), ''Textual Sources for the Study of Hinduism'', 1st Edition, University of Chicago Press, , pages 2-3; Quote: "The Upanishads supply the basis of later Hindu philosophy; they are widely known and quoted by most well-educated Hindus, and their central ideas have also become a part of the spiritual arsenal of rank-and-file Hindus." They are the most recent part of the
Vedas upright=1.2, The Vedas are ancient Sanskrit texts of Hinduism. Above: A page from the '' Atharvaveda''. The Vedas (, , ) are a large body of religious texts originating in ancient India. Composed in Vedic Sanskrit, the texts constitute th ...
, the oldest scriptures of Hinduism, and deal with meditation,
philosophy Philosophy (from , ) is the systematized study of general and fundamental questions, such as those about existence, reason, knowledge, values, mind, and language. Such questions are often posed as problems to be studied or resolved. ...
,
consciousness Consciousness, at its simplest, is sentience and awareness of internal and external existence. However, the lack of definitions has led to millennia of analyses, explanations and debates by philosophers, theologians, linguisticians, and scien ...
, and ontological knowledge; earlier parts of the Vedas deal with mantras, benedictions, rituals, ceremonies, and sacrifices.Gavin Flood (1996), ''An Introduction to Hinduism'', Cambridge University Press, , pp. 35–39A Bhattacharya (2006), ''Hindu Dharma: Introduction to Scriptures and Theology'', , pp. 8–14; George M. Williams (2003), Handbook of Hindu Mythology,
Oxford University Press Oxford University Press (OUP) is the university press of the University of Oxford. It is the largest university press in the world, and its printing history dates back to the 1480s. Having been officially granted the legal right to print book ...
, , p. 285
Jan Gonda (1975), ''Vedic Literature: (Saṃhitās and Brāhmaṇas)'', Otto Harrassowitz Verlag, While among the most important literature in the history of Indian religions and culture, the Upanishads document a wide variety of "rites, incarnations, and esoteric knowledge" departing from Vedic ritualism and interpreted in various ways in the later commentarial traditions. Of all Vedic literature, the Upanishads alone are widely known, and their diverse ideas, interpreted in various ways, informed the later traditions of Hinduism. The Upanishads are commonly referred to as ''
Vedānta ''Vedanta'' (; sa, वेदान्त, ), also ''Uttara Mīmāṃsā'', is one of the six (''āstika'') schools of Hindu philosophy. Literally meaning "end of the Vedas", Vedanta reflects ideas that emerged from, or were aligned with, ...
.'' Vedanta has been interpreted as the "last chapters, parts of the
Veda upright=1.2, The Vedas are ancient Sanskrit texts of Hinduism. Above: A page from the '' Atharvaveda''. The Vedas (, , ) are a large body of religious texts originating in ancient India. Composed in Vedic Sanskrit, the texts constitute the ...
" and alternatively as "object, the highest purpose of the Veda". The aim of all Upanishads is to investigate the nature of Ātman (self), and "direct ngthe enquirer toward it." Various ideas about the relation between Atman and Brahman can be found, and later commentators tried to harmonize this diversity. Along with the ''
Bhagavad Gita The Bhagavad Gita (; sa, श्रीमद्भगवद्गीता, lit=The Song by God, translit=śrīmadbhagavadgītā;), often referred to as the Gita (), is a 700- verse Hindu scripture that is part of the epic ''Mahabharata'' ( ...
'' and the Brahmasutra, the ''mukhya'' Upanishads (known collectively as the '' Prasthanatrayi'') provide a foundation for the several later schools of
Vedanta ''Vedanta'' (; sa, वेदान्त, ), also ''Uttara Mīmāṃsā'', is one of the six (''āstika'') schools of Hindu philosophy. Literally meaning "end of the Vedas", Vedanta reflects ideas that emerged from, or were aligned with, ...
, including
Adi Shankara Adi Shankara ("first Shankara," to distinguish him from other Shankaras)(8th cent. CE), also called Adi Shankaracharya ( sa, आदि शङ्कर, आदि शङ्कराचार्य, Ādi Śaṅkarācāryaḥ, lit=First Shanka ...
's
Advaita Vedanta ''Advaita Vedanta'' (; sa, अद्वैत वेदान्त, ) is a Hindu sādhanā, a path of spiritual discipline and experience, and the oldest extant tradition of the orthodox Hindu school Vedānta. The term ''Advaita'' ...
(monistic or nondualistic),
Ramanuja Ramanuja (Middle Tamil: Rāmāṉujam; Classical Sanskrit: Rāmanuja; 1017 CE – 1137 CE; ; ), also known as Ramanujacharya, was an Indian Hindu philosopher, guru and a social reformer. He is noted to be one of the most important exponents ...
's ( 1077–1157 CE)
Vishishtadvaita Vishishtadvaita (IAST '; sa, विशिष्टाद्वैत) is one of the most popular schools of the Vedanta school of Hindu philosophy. Vedanta literally means the in depth meaning ''of the Vedas.'' ''Vishisht Advaita'' (liter ...
(qualified monism), and Madhvacharya's (1199–1278 CE)
Dvaita Dvaita Vedanta (); (originally known as Tattvavada; IAST:Tattvavāda), is a sub-school in the Vedanta tradition of Hindu philosophy. The term Tattvavada literally means "arguments from a realist viewpoint". The Tattvavada (Dvaita) Vedanta ...
(dualism). Around 108 Upanishads are known, of which the first dozen or so are the oldest and most important and are referred to as the principal or main ('' mukhya'') Upanishads. The ''mukhya'' Upanishads are found mostly in the concluding part of the ''
Brahmanas The Brahmanas (; Sanskrit: , ''Brāhmaṇam'') are Vedic śruti works attached to the Samhitas (hymns and mantras) of the Rig, Sama, Yajur, and Atharva Vedas. They are a secondary layer or classification of Sanskrit texts embedded within ...
'' and '' Aranyakas'' and were, for centuries, memorized by each generation and passed down orally. The ''mukhya'' Upanishads predate the
Common Era Common Era (CE) and Before the Common Era (BCE) are year notations for the Gregorian calendar (and its predecessor, the Julian calendar), the world's most widely used calendar era. Common Era and Before the Common Era are alternatives to the or ...
, but there is no scholarly consensus on their date, or even on which ones are pre- or post-Buddhist. The ''Brhadaranyaka'' is seen as particularly ancient by modern scholars.Bronkhorst, Johannes (2007). ''Greater Magadha: Studies in the Culture of Early India'', pp. 258-259. BRILL. Of the remainder, 95 Upanishads are part of the Muktikā canon, composed from about the last centuries of 1st-millennium BCE through about 15th-century CE. New Upanishads, beyond the 108 in the Muktika canon, continued to be composed through the early modern and modern era, though often dealing with subjects that are unconnected to the Vedas. With the translation of the Upanishads in the early 19th century they also started to attract attention from a Western audience. German philosopher
Arthur Schopenhauer Arthur Schopenhauer ( , ; 22 February 1788 – 21 September 1860) was a German philosopher. He is best known for his 1818 work ''The World as Will and Representation'' (expanded in 1844), which characterizes the phenomenal world as the prod ...
was deeply impressed by the Upanishads and called it "the most profitable and elevating reading which... is possible in the world". Modern era Indologists have discussed the similarities between the fundamental concepts in the Upanishads and major Western philosophers.


Etymology

The
Sanskrit Sanskrit (; attributively , ; nominally , , ) is a classical language belonging to the Indo-Aryan languages, Indo-Aryan branch of the Indo-European languages. It arose in South Asia after its predecessor languages had Trans-cultural diffusion ...
term ' (from ''upa'' "by" and ''ni-ṣad'' "sit down") translates to "sitting down near", referring to the student sitting down near the teacher while receiving spiritual knowledge.(Gurumukh) Other dictionary meanings include "esoteric doctrine" and "secret doctrine".
Monier-Williams Sir Monier Monier-Williams (; né Williams; 12 November 1819 – 11 April 1899) was a British scholar who was the second Boden Professor of Sanskrit at Oxford University, England. He studied, documented and taught Asian languages, especially ...
' ''Sanskrit Dictionary'' notes – "According to native authorities, Upanishad means setting to rest ignorance by revealing the knowledge of the supreme spirit."
Adi Shankara Adi Shankara ("first Shankara," to distinguish him from other Shankaras)(8th cent. CE), also called Adi Shankaracharya ( sa, आदि शङ्कर, आदि शङ्कराचार्य, Ādi Śaṅkarācāryaḥ, lit=First Shanka ...
charya explains in his commentary on the and
Brihadaranyaka Upanishad The ''Brihadaranyaka Upanishad'' ( sa, बृहदारण्यक उपनिषद्, ) is one of the Principal Upanishads and one of the first Upanishadic scriptures of Hinduism. A key scripture to various schools of Hinduism, the '' ...
that the word means ''Ātmavidyā'', that is, "knowledge of the
self The self is an individual as the object of that individual’s own reflective consciousness. Since the ''self'' is a reference by a subject to the same subject, this reference is necessarily subjective. The sense of having a self—or ''selfhoo ...
", or ''Brahmavidyā'' "knowledge of
Brahma Brahma ( sa, ब्रह्मा, Brahmā) is a Hindu god, referred to as "the Creator" within the Trimurti, the trinity of supreme divinity that includes Vishnu, and Shiva.Jan Gonda (1969)The Hindu Trinity Anthropos, Bd 63/64, H 1/2, pp ...
". The word appears in the verses of many Upanishads, such as the fourth verse of the 13th volume in first chapter of the Chandogya Upanishad.
Max Müller Friedrich Max Müller (; 6 December 1823 – 28 October 1900) was a German-born philologist and Orientalist, who lived and studied in Britain for most of his life. He was one of the founders of the western academic disciplines of Indian ...
as well as
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 ...
translate the word ''Upanishad'' in these verses as "secret doctrine", Robert Hume translates it as "mystic meaning", while
Patrick Olivelle Patrick Olivelle is an Indologist. A philologist and scholar of Sanskrit Literature whose work has focused on asceticism, renunciation and the dharma, Olivelle has been Professor of Sanskrit and Indian Religions in the Department of Asian Stu ...
translates it as "hidden connections".


Development


Authorship

The authorship of most Upanishads is unknown. Radhakrishnan states, "almost all the early literature of India was anonymous, we do not know the names of the authors of the Upanishads".S Radhakrishnan
The Principal Upanishads
George Allen & Co., 1951, pages 22, Reprinted as
The ancient Upanishads are embedded in the Vedas, the oldest of Hinduism's religious scriptures, which some traditionally consider to be '' apauruṣeya'', which means "not of a man, superhuman" and "impersonal, authorless". The Vedic texts assert that they were skillfully created by ''
Rishi ''Rishi'' () is a term for an accomplished and enlightened person. They find mentions in various Vedic texts. Rishis are believed to have composed hymns of the Vedas. The Post-Vedic tradition of Hinduism regards the rishis as "great yogis" o ...
s'' (sages), after inspired creativity, just as a carpenter builds a chariot.Hartmut Scharfe (2002), Handbook of Oriental Studies, BRILL Academic, , pages 13-14 The various philosophical theories in the early Upanishads have been attributed to famous sages such as
Yajnavalkya Yajnavalkya or Yagyavalkya ( sa, याज्ञवल्क्य, ) is a Hindu Vedic sage figuring in the Brihadaranyaka Upanishad (c. 700 BCE)., Quote: "Yajnavalkya, a Vedic sage, taught..."Ben-Ami Scharfstein (1998), ''A comparative histor ...
, Uddalaka Aruni, Shvetaketu, Shandilya, Aitareya, Balaki, Pippalada, and Sanatkumara. Women, such as Maitreyi and Gargi, participate in the dialogues and are also credited in the early Upanishads. There are some exceptions to the anonymous tradition of the Upanishads. The
Shvetashvatara Upanishad The ''Shvetashvatara Upanishad'' ( sa, श्वेताश्वतरोपनिषद् or or , IAST: ' or ') is an ancient Sanskrit text embedded in the Yajurveda. It is listed as number 14 in the Muktika canon of 108 Upanishads. The Up ...
, for example, includes closing credits to sage ''Shvetashvatara'', and he is considered the author of the Upanishad. Many scholars believe that early Upanishads were interpolated and expanded over time. There are differences within manuscripts of the same Upanishad discovered in different parts of South Asia, differences in non-Sanskrit version of the texts that have survived, and differences within each text in terms of meter, style, grammar and structure. The existing texts are believed to be the work of many authors.


Chronology

Scholars are uncertain about when the Upanishads were composed. The chronology of the early Upanishads is difficult to resolve, states philosopher and Sanskritist Stephen Phillips,Stephen Phillips (2009), ''Yoga, Karma, and Rebirth: A Brief History and Philosophy'', Columbia University Press, , pp. 25-29 and Chapter 1. because all opinions rest on scanty evidence and analysis of archaism, style and repetitions across texts, and are driven by assumptions about likely evolution of ideas, and presumptions about which philosophy might have influenced which other Indian philosophies. Indologist
Patrick Olivelle Patrick Olivelle is an Indologist. A philologist and scholar of Sanskrit Literature whose work has focused on asceticism, renunciation and the dharma, Olivelle has been Professor of Sanskrit and Indian Religions in the Department of Asian Stu ...
says that "in spite of claims made by some, in reality, any dating of these documents
arly Upanishads The Arly () is a 32.1 km long river in the departments of Savoie and Haute-Savoie, France. It is a tributary of the Isère, which it joins at Albertville. Towns crossed by the river * Megève * Praz-sur-Arly * Flumet * Saint-Nicolas-la-Ch ...
that attempts a precision closer than a few centuries is as stable as a house of cards".Patrick Olivelle (2014), ''The Early Upanishads,'' Oxford University Press, , pages 12-14. Some scholars have tried to analyse similarities between Hindu Upanishads and Buddhist literature to establish chronology for the Upanishads. Precise dates are impossible, and most scholars give only broad ranges encompassing various centuries. Gavin Flood states that "the Upanisads are not a homogeneous group of texts. Even the older texts were composed over a wide expanse of time from about 600 to 300 BCE." Stephen Phillips places the early or "principal" Upanishads in the 800 to 300 BCE range.
Patrick Olivelle Patrick Olivelle is an Indologist. A philologist and scholar of Sanskrit Literature whose work has focused on asceticism, renunciation and the dharma, Olivelle has been Professor of Sanskrit and Indian Religions in the Department of Asian Stu ...
, a Sanskrit
Philologist Philology () is the study of language in oral and written historical sources; it is the intersection of textual criticism, literary criticism, history, and linguistics (with especially strong ties to etymology). Philology is also defined ...
and
Indologist Indology, also known as South Asian studies, is the academic study of the history and cultures, languages, and literature of the Indian subcontinent, and as such is a subset of Asian studies. The term ''Indology'' (in German, ''Indologie'') i ...
, gives the following chronology for the early Upanishads, also called the
Principal Upanishads Principal Upanishads, also known as Mukhya Upanishads, are the most ancient and widely studied Upanishads of Hinduism. Composed between 800 BCE to the start of common era, these texts are connected to the Vedic tradition. Content The Principal ...
: * The ''Brhadaranyaka'' and the ''Chandogya'' are the two earliest Upanishads. They are edited texts, some of whose sources are much older than others. The two texts are pre-Buddhist; they may be placed in the 7th to 6th centuries BCE, give or take a century or so. * The three other early prose Upanisads—''Taittiriya, Aitareya'', and ''Kausitaki'' come next; all are probably pre-Buddhist and can be assigned to the 6th to 5th centuries BCE. * The Kena is the oldest of the verse Upanisads followed by probably the Katha, Isa, Svetasvatara, and Mundaka. All these Upanisads were composed probably in the last few centuries BCE. According to Olivelle, "All exhibit strong theistic tendencies and are probably the earliest literary products of the theistic tradition, whose later literature includes the Bhagavad Gita and the Puranas." * The two late prose Upanisads, the Prasna and the Mandukya, cannot be much older than the beginning of the common era. Meanwhile, the Indologist
Johannes Bronkhorst Johannes Bronkhorst (born 17 July 1946, Schiedam) is a Dutch Orientalist and Indologist, specializing in Buddhist studies and early Buddhism. He is emeritus professor at the University of Lausanne. Life After studying Mathematics, Physics, ...
argues for a later date for the Upanishads than has generally been accepted. Bronkhorst places even the oldest of the Upanishads, such as the ''Brhadaranyaka'' as possibly still being composed at "a date close to Katyayana and Patañjali he grammarian (i.e., 2nd century BCE). The later Upanishads, numbering about 95, also called minor Upanishads, are dated from the late 1st-millennium BCE to mid 2nd-millennium CE. Gavin Flood dates many of the twenty
Yoga Yoga (; sa, योग, lit=yoke' or 'union ) is a group of physical, mental, and spiritual practices or disciplines which originated in ancient India and aim to control (yoke) and still the mind, recognizing a detached witness-consciou ...
Upanishads to be probably from the 100 BCE to 300 CE period.
Patrick Olivelle Patrick Olivelle is an Indologist. A philologist and scholar of Sanskrit Literature whose work has focused on asceticism, renunciation and the dharma, Olivelle has been Professor of Sanskrit and Indian Religions in the Department of Asian Stu ...
and other scholars date seven of the twenty
Sannyasa Upanishads Sannyasa Upanishads are a group of minor Upanishads of Hinduism related to the renunciation, monastic practice and asceticism. There are 19 Sannyasa Upanishads in the Muktika anthology of 108 Upanishads. They, along with other minor Upanishads, ...
to likely have been complete sometime between the last centuries of the 1st-millennium BCE to 300 CE. About half of the Sannyasa Upanishads were likely composed in 14th- to 15th-century CE.


Geography

The general area of the composition of the early Upanishads is considered as northern India. The region is bounded on the west by the upper Indus valley, on the east by lower Ganges region, on the north by the Himalayan foothills, and on the south by the Vindhya mountain range. Scholars are reasonably sure that the early Upanishads were produced at the geographical center of ancient Brahmanism, comprising the regions of
Kuru Kuru may refer to: Anthropology and history * Kuru (disease), a type of transmissible spongiform encephalopathy associated with the cannibalistic funeral practices of the Fore people * Kuru (mythology), part of Meithei mythology * Kuru Kingdom, ...
- Panchala and
Kosala The Kingdom of Kosala (Sanskrit: ) was an ancient Indian kingdom with a rich culture, corresponding to the area within the region of Awadh in present-day Uttar Pradesh to Western Odisha. It emerged as a small state during the late Vedic peri ...
-
Videha Videha ( Prākrit: ; Pāli: ; Sanskrit: ) was an ancient Indo-Aryan tribe of north-eastern South Asia whose existence is attested during the Iron Age. The population of Videha, the Vaidehas, were initially organised into a monarchy but la ...
together with the areas immediately to the south and west of these. This region covers modern
Bihar Bihar (; ) is a state in eastern India. It is the 2nd largest state by population in 2019, 12th largest by area of , and 14th largest by GDP in 2021. Bihar borders Uttar Pradesh to its west, Nepal to the north, the northern part of West ...
,
Nepal Nepal (; ne, नेपाल ), formerly the Federal Democratic Republic of Nepal ( ne, सङ्घीय लोकतान्त्रिक गणतन्त्र नेपाल ), is a landlocked country in South Asia. It is ma ...
,
Uttar Pradesh Uttar Pradesh (; , 'Northern Province') is a state in northern India. With over 200 million inhabitants, it is the most populated state in India as well as the most populous country subdivision in the world. It was established in 195 ...
,
Uttarakhand Uttarakhand ( , or ; , ), also known as Uttaranchal ( ; the official name until 2007), is a state in the northern part of India. It is often referred to as the "Devbhumi" (literally 'Land of the Gods') due to its religious significance and ...
,
Himachal Pradesh Himachal Pradesh (; ; "Snow-laden Mountain Province") is a state in the northern part of India. Situated in the Western Himalayas, it is one of the thirteen mountain states and is characterized by an extreme landscape featuring several pea ...
,
Haryana Haryana (; ) is an Indian state located in the northern part of the country. It was carved out of the former state of East Punjab on 1 Nov 1966 on a linguistic basis. It is ranked 21st in terms of area, with less than 1.4% () of India's land ...
, eastern
Rajasthan Rajasthan (; lit. 'Land of Kings') is a state in northern India. It covers or 10.4 per cent of India's total geographical area. It is the largest Indian state by area and the seventh largest by population. It is on India's northwestern ...
, and northern
Madhya Pradesh Madhya Pradesh (, ; meaning 'central province') is a state in central India. Its capital is Bhopal, and the largest city is Indore, with Jabalpur, Ujjain, Gwalior, Sagar, and Rewa being the other major cities. Madhya Pradesh is the second ...
. While significant attempts have been made recently to identify the exact locations of the individual Upanishads, the results are tentative. Witzel identifies the center of activity in the Brihadaranyaka Upanishad as the area of Videha, whose king, Janaka, features prominently in the Upanishad. The Chandogya Upanishad was probably composed in a more western than eastern location in the Indian subcontinent, possibly somewhere in the western region of the Kuru-Panchala country. Compared to the Principal Upanishads, the new Upanishads recorded in the belong to an entirely different region, probably southern India, and are considerably relatively recent. In the fourth chapter of the Kaushitaki Upanishad, a location named Kashi (modern
Varanasi Varanasi (; ; also Banaras or Benares (; ), and Kashi.) is a city on the Ganges river in northern India that has a central place in the traditions of pilgrimage, death, and mourning in the Hindu world. * * * * The city has a syncretic t ...
) is mentioned.


Classification


Muktika canon: major and minor Upanishads

There are more than 200 known ''Upanishads'', one of which, the ' Upanishad, predates 1656 CE and contains a list of 108 canonical Upanishads, including itself as the last. These are further divided into Upanishads associated with
Shaktism Shaktism ( sa, शाक्त, , ) is one of several major Hindu denominations, wherein the metaphysical reality is considered metaphorically a woman and Shakti ( Mahadevi) is regarded as the supreme godhead. It includes many goddesses, al ...
(goddess Shakti),
Sannyasa ''Sannyasa'' (Sanskrit: संन्यास; IAST: ), sometimes spelled Sanyasa (सन्न्यास) or Sanyasi (for the person), is life of renunciation and the fourth stage within the Hindu system of four life stages known as '' A ...
(renunciation, monastic life),
Shaivism Shaivism (; sa, शैवसम्प्रदायः, Śaivasampradāyaḥ) is one of the major Hindu traditions, which worships Shiva as the Supreme Being. One of the largest Hindu denominations, it incorporates many sub-traditions rangi ...
(god Shiva),
Vaishnavism Vaishnavism ( sa, वैष्णवसम्प्रदायः, Vaiṣṇavasampradāyaḥ) is one of the major Hindu denominations along with Shaivism, Shaktism, and Smartism. It is also called Vishnuism since it considers Vishnu as ...
(god Vishnu),
Yoga Yoga (; sa, योग, lit=yoke' or 'union ) is a group of physical, mental, and spiritual practices or disciplines which originated in ancient India and aim to control (yoke) and still the mind, recognizing a detached witness-consciou ...
, and ''Sāmānya'' (general, sometimes referred to as Samanya-Vedanta). Some of the Upanishads are categorized as "sectarian" since they present their ideas through a particular god or goddess of a specific Hindu tradition such as Vishnu, Shiva, Shakti, or a combination of these such as the
Skanda Upanishad ''Skanda Upanishad'' or ''Skandopanishad'' ( sa, स्कंदोपनिषद्) is one of the 108 Upanishads of Hinduism, written in Sanskrit. It is classified as a Samanya (general) Upanishad and is associated with the ''Krishna Yajurv ...
. These traditions sought to link their texts as Vedic, by asserting their texts to be an Upanishad, thereby a ''
Śruti ''Shruti'' ( sa, श्रुति, , ) in Sanskrit means "that which is heard" and refers to the body of most authoritative, ancient religious texts comprising the central canon of Hinduism. Manusmriti states: ''Śrutistu vedo vijñeyaḥ'' ...
''. Most of these sectarian Upanishads, for example the Rudrahridaya Upanishad and the
Mahanarayana Upanishad The ''Mahanarayana Upanishad'' ( sa, महानारायण उपनिषद्, IAST: Mahānārāyaṇa Upaniṣad) is an ancient Sanskrit text, and is one of the minor Upanishads of Hinduism. The text is classified as a Vaishnava Upa ...
, assert that all the Hindu gods and goddesses are the same, all an aspect and manifestation of
Brahman In Hinduism, ''Brahman'' ( sa, ब्रह्मन्) connotes the highest universal principle, the ultimate reality in the universe.P. T. Raju (2006), ''Idealistic Thought of India'', Routledge, , page 426 and Conclusion chapter part X ...
, the Vedic concept for metaphysical ultimate reality before and after the creation of the Universe.


Principal Upanishads

The Principal Upanishads, also known as the ''Mukhya Upanishads'', can be grouped into periods. Of the early periods are the ''Brihadaranyaka'' and the ''Chandogya'', the oldest. The Aitareya, Kauṣītaki and Taittirīya Upanishads may date to as early as the mid-1st millennium BCE, while the remnant date from between roughly the 4th to 1st centuries BCE, roughly contemporary with the earliest portions of the Sanskrit epics. One chronology assumes that the ''Aitareya, Taittiriya, Kausitaki, Mundaka, Prasna'', and ''Katha Upanishads'' has Buddha's influence, and is consequently placed after the 5th century BCE, while another proposal questions this assumption and dates it independent of Buddha's date of birth. The ''Kena'', ''Mandukya,'' and ''Isa Upanishads'' are typically placed after these Principal Upanishads, but other scholars date these differently. But Richard King's chronology of Upanishads is totally wrong and refuted by Modern scholars as Aitreya, Taittiriya, Kena, Isa, Katha have no Buddhist influence and were formed before the birth of Buddha. Not much is known about the authors except for those, like Yajnavalkayva and Uddalaka, mentioned in the texts. A few women discussants, such as Gargi and Maitreyi, the wife of Yajnavalkayva, also feature occasionally. Each of the principal ''Upanishads'' can be associated with one of the schools of exegesis of the four Vedas ('' shakhas''). Many Shakhas are said to have existed, of which only a few remain. The new ''Upanishads'' often have little relation to the Vedic corpus and have not been cited or commented upon by any great Vedanta philosopher: their language differs from that of the classic ''Upanishads'', being less subtle and more formalized. As a result, they are not difficult to comprehend for the modern reader.


New Upanishads

There is no fixed list of the ''Upanishads'' as newer ones, beyond the Muktika anthology of 108 Upanishads, have continued to be discovered and composed. In 1908, for example, four previously unknown Upanishads were discovered in newly found manuscripts, and these were named ''Bashkala'', ''Chhagaleya'', ''Arsheya'', and ''Saunaka'', by
Friedrich Schrader Friedrich Schrader (19 November 1865 – 28 August 1922) was a German philologist of oriental languages, orientalist, art historian, writer, social democrat, translator and journalist. He also used the pseudonym Ischtiraki (Arabic/ Ottoman f ...
, who attributed them to the first prose period of the Upanishads. The text of three of them, namely the ''Chhagaleya'', ''Arsheya'', and ''Saunaka'', were incomplete and inconsistent, likely poorly maintained or corrupted. Ancient Upanishads have long enjoyed a revered position in Hindu traditions, and authors of numerous sectarian texts have tried to benefit from this reputation by naming their texts as Upanishads. These "new Upanishads" number in the hundreds, cover diverse range of topics from physiology to renunciationPatrick Olivelle (1992), The Samnyasa Upanisads, Oxford University Press, , pages 1-12, 98-100; for an example, see Bhikshuka Upanishad to sectarian theories. They were composed between the last centuries of the 1st millennium BCE through the early modern era (~1600 CE). While over two dozen of the minor Upanishads are dated to pre-3rd century CE, many of these new texts under the title of "Upanishads" originated in the first half of the 2nd millennium CE, they are not Vedic texts, and some do not deal with themes found in the Vedic Upanishads. The main
Shakta Shaktism ( sa, शाक्त, , ) is one of several major Hindu denominations, wherein the metaphysical reality is considered metaphorically a woman and Shakti ( Mahadevi) is regarded as the supreme godhead. It includes many goddesses, all ...
Upanishads, for example, mostly discuss doctrinal and interpretative differences between the two principal sects of a major Tantric form of Shaktism called
Shri Vidya Shri Vidya (ISO: '; ; sometimes also spelled Sri Vidya or Shree Vidya) is a Hindu Tantric religious system devoted to the Goddess as Lalitā Tripurasundarī (''Beautiful Goddess of the Three worlds''), Bhuvaneshvari, Maha Lakshmi, etc. A thousa ...
upasana Upasana (Sanskrit: उपासना ') literally means "worship" and "sitting near, attend to". The term also refers to one of three ' (, parts) of Vedas, one that focuses on worship. The other two parts of Vedas are called Aranyakas and Upanish ...
. The many extant lists of authentic ''Shakta Upaniṣads'' vary, reflecting the sect of their compilers, so that they yield no evidence of their "location" in Tantric tradition, impeding correct interpretation. The Tantra content of these texts also weaken its identity as an Upaniṣad for non-Tantrikas. Sectarian texts such as these do not enjoy status as shruti and thus the authority of the new Upanishads as scripture is not accepted in Hinduism.


Association with Vedas

All Upanishads are associated with one of the four Vedas—
Rigveda The ''Rigveda'' or ''Rig Veda'' ( ', from ' "praise" and ' "knowledge") is an ancient Indian collection of Vedic Sanskrit hymns (''sūktas''). It is one of the four sacred canonical Hindu texts ('' śruti'') known as the Vedas. Only on ...
,
Samaveda The Samaveda (, from ' "song" and ' "knowledge"), is the Veda of melodies and chants. It is an ancient Vedic Sanskrit text, and part of the scriptures of Hinduism. One of the four Vedas, it is a liturgical text which consists of 1,875 verses. A ...
,
Yajurveda The ''Yajurveda'' ( sa, यजुर्वेद, ', from ' meaning "worship", and ''veda'' meaning "knowledge") is the Veda primarily of prose mantras for worship rituals.Michael Witzel (2003), "Vedas and Upaniṣads", in ''The Blackwell C ...
(there are two primary versions or ''Samhitas'' of the Yajurveda:
Shukla Yajurveda The ''Yajurveda'' ( sa, यजुर्वेद, ', from ' meaning "worship", and ''veda'' meaning "knowledge") is the Veda primarily of prose mantras for worship rituals.Michael Witzel (2003), "Vedas and Upaniṣads", in ''The Blackwell C ...
, Krishna Yajurveda), and
Atharvaveda The Atharva Veda (, ' from ' and ''veda'', meaning "knowledge") is the "knowledge storehouse of ''atharvāṇas'', the procedures for everyday life".Laurie Patton (2004), Veda and Upanishad, in ''The Hindu World'' (Editors: Sushil Mittal and G ...
. During the modern era, the ancient Upanishads that were embedded texts in the Vedas, were detached from the
Brahmana The Brahmanas (; Sanskrit: , ''Brāhmaṇam'') are Vedic śruti works attached to the Samhitas (hymns and mantras) of the Rig, Sama, Yajur, and Atharva Vedas. They are a secondary layer or classification of Sanskrit texts embedded within ...
and
Aranyaka The Aranyakas (; sa, आरण्यक; IAST: ' ) are the part of the ancient Indian Vedas concerned with the meaning of ritual sacrifice. They typically represent the later sections of the Vedas, and are one of many layers of the Vedic text ...
layers of Vedic text, compiled into separate texts and these were then gathered into
anthologies In book publishing, an anthology is a collection of literary works chosen by the compiler; it may be a collection of plays, poems, short stories, songs or excerpts by different authors. In genre fiction, the term ''anthology'' typically categ ...
of the Upanishads. These lists associated each Upanishad with one of the four Vedas, many such lists exist, and these lists are inconsistent across India in terms of which Upanishads are included and how the newer Upanishads are assigned to the ancient Vedas. In south India, the collected list based on Muktika Upanishad, and published in
Telugu language Telugu (; , ) is a Dravidian languages, Dravidian language spoken by Telugu people predominantly living in the Indian states of Andhra Pradesh, Andhra Pradesh and Telangana, where it is also the official language. It is the most widely spoken ...
, became the most common by the 19th-century and this is a list of 108 Upanishads. In north India, a list of 52 Upanishads has been most common. The Upanishad's list of 108 Upanishads groups the first 13 as '' mukhya'', 21 as Sāmānya Vedānta, 20 as
Sannyāsa ''Sannyasa'' (Sanskrit: संन्यास; IAST: ), sometimes spelled Sanyasa (सन्न्यास) or Sanyasi (for the person), is life of renunciation and the fourth stage within the Hindu system of four life stages known as '' As ...
, 14 as
Vaishnava Vaishnavism ( sa, वैष्णवसम्प्रदायः, Vaiṣṇavasampradāyaḥ) is one of the major Hindu denominations along with Shaivism, Shaktism, and Smartism. It is also called Vishnuism since it considers Vishnu as the ...
, 12 as
Shaiva Shaivism (; sa, शैवसम्प्रदायः, Śaivasampradāyaḥ) is one of the major Hindu traditions, which worships Shiva as the Supreme Being. One of the largest Hindu denominations, it incorporates many sub-traditions rangi ...
, 8 as
Shakta Shaktism ( sa, शाक्त, , ) is one of several major Hindu denominations, wherein the metaphysical reality is considered metaphorically a woman and Shakti ( Mahadevi) is regarded as the supreme godhead. It includes many goddesses, all ...
, and 20 as
Yoga Yoga (; sa, योग, lit=yoke' or 'union ) is a group of physical, mental, and spiritual practices or disciplines which originated in ancient India and aim to control (yoke) and still the mind, recognizing a detached witness-consciou ...
.The Yoga Upanishads
TR Srinivasa Ayyangar (Translator), SS Sastri (Editor), Adyar Library
The 108 Upanishads as recorded in the are shown in the table below. The mukhya Upanishads are the most important and highlighted.


Philosophy

The Upanishadic age was characterized by a pluralism of worldviews. While some Upanishads have been deemed 'monistic', others, including the Katha Upanishad, are dualistic. The Maitri is one of the Upanishads that inclines more toward dualism, thus grounding classical
Samkhya ''Samkhya'' or ''Sankya'' (; Sanskrit सांख्य), IAST: ') is a dualistic school of Indian philosophy. It views reality as composed of two independent principles, '' puruṣa'' ('consciousness' or spirit); and ''prakṛti'', (nature ...
and
Yoga Yoga (; sa, योग, lit=yoke' or 'union ) is a group of physical, mental, and spiritual practices or disciplines which originated in ancient India and aim to control (yoke) and still the mind, recognizing a detached witness-consciou ...
schools of Hinduism, in contrast to the non-dualistic Upanishads at the foundation of its Vedanta school. They contain a plurality of ideas. The Upanishads include sections on philosophical theories that have been at the foundation of Indian traditions. For example, the
Chandogya Upanishad The ''Chandogya Upanishad'' (Sanskrit: , IAST: ''Chāndogyopaniṣad'') is a Sanskrit text embedded in the Chandogya Brahmana of the Sama Veda of Hinduism.Patrick Olivelle (2014), ''The Early Upanishads'', Oxford University Press; , pp. 166- ...
includes one of the earliest known declarations of
Ahimsa Ahimsa (, IAST: ''ahiṃsā'', ) is the ancient Indian principle of nonviolence which applies to all living beings. It is a key virtue in most Indian religions: Jainism, Buddhism, and Hinduism.Bajpai, Shiva (2011). The History of India � ...
(non-violence) as an ethical precept. Discussion of other ethical premises such as Damah (temperance, self-restraint),
Satya ''Satya'' (Sanskrit: सत्य; IAST: ''satya)'' is a Sanskrit word loosely translated as truth, essence. A. A. Macdonell, ''Sanskrit English Dictionary'', Asian Educational Services, , pp. 330–331 It also refers to a virtue in Indian relig ...
(truthfulness),
Dāna Dāna (Devanagari: दान, IAST: Dānam) is a Sanskrit and Pali word that connotes the virtue of generosity, charity or giving of alms in Indian philosophies. In Hinduism, Buddhism, Jainism, and Sikhism, dāna is the practice of cu ...
(charity), Ārjava (non-hypocrisy), Daya (compassion), and others are found in the oldest Upanishads and many later Upanishads. Similarly, the Karma doctrine is presented in the
Brihadaranyaka Upanishad The ''Brihadaranyaka Upanishad'' ( sa, बृहदारण्यक उपनिषद्, ) is one of the Principal Upanishads and one of the first Upanishadic scriptures of Hinduism. A key scripture to various schools of Hinduism, the '' ...
, which is the oldest Upanishad.


Development of thought

While the hymns of the Vedas emphasize rituals and the Brahmanas serve as a liturgical manual for those Vedic rituals, the spirit of the Upanishads is inherently opposed to ritual. The older Upanishads launch attacks of increasing intensity on the ritual. Anyone who worships a divinity other than the self is called a domestic animal of the gods in the
Brihadaranyaka Upanishad The ''Brihadaranyaka Upanishad'' ( sa, बृहदारण्यक उपनिषद्, ) is one of the Principal Upanishads and one of the first Upanishadic scriptures of Hinduism. A key scripture to various schools of Hinduism, the '' ...
. The Upanishad parodies those who indulge in the acts of sacrifice by comparing them with a procession of dogs chanting ''Om! Let's eat. Om! Let's drink''. The
Kaushitaki Upanishad The ''Kaushitaki Upanishad'' ( sa, कौषीतकि उपनिषद्, ) is an ancient Sanskrit text contained inside the Rigveda. It is associated with the ''Kaushitaki'' shakha, but a Sāmānya Upanishad, meaning that it is "common" ...
asserts that "external rituals such as Agnihotram offered in the morning and in the evening, must be replaced with inner Agnihotram, the ritual of introspection", and that "not rituals, but knowledge should be one's pursuit". The
Mundaka Upanishad The Mundaka Upanishad ( sa, मुण्डक-उपनिषद्, ) is an ancient Sanskrit Vedic text, embedded inside Atharva Veda. It is a Mukhya (primary) Upanishad, and is listed as number 5 in the Muktika canon of 108 Upanishads of ...
declares how man has been called upon, promised benefits for, scared unto and misled into performing sacrifices, oblations and pious works. Mundaka thereafter asserts this is foolish and frail, by those who encourage it and those who follow it, because it makes no difference to man's current life and after-life, it is like blind men leading the blind, it is a mark of conceit and vain knowledge, ignorant inertia like that of children, a futile useless practice.Max Müller (1962), Manduka Upanishad, in The Upanishads - Part II, Oxford University Press, Reprinted as , pages 30-33 The
Maitri Upanishad The ''Maitrayaniya Upanishad'' ( sa, मैत्रायणीय उपनिषद्, ) is an ancient Sanskrit text that is embedded inside the Yajurveda.Paul Deussen, Sixty Upanishads of the Veda, Volume 1, Motilal Banarsidass, , pages 3 ...
states, The opposition to the ritual is not explicit in the oldest Upanishads. On occasions, the Upanishads extend the task of the Aranyakas by making the ritual allegorical and giving it a philosophical meaning. For example, the Brihadaranyaka interprets the practice of horse-sacrifice or ''
ashvamedha The Ashvamedha ( sa, अश्वमेध, aśvamedha, translit-std=IAST) was a horse sacrifice ritual followed by the Śrauta tradition of Vedic religion. It was used by ancient Indian kings to prove their imperial sovereignty: a horse accom ...
'' allegorically. It states that the over-lordship of the earth may be acquired by sacrificing a horse. It then goes on to say that spiritual autonomy can only be achieved by renouncing the universe which is conceived in the image of a horse. In similar fashion, Vedic gods such as the ''Agni'', ''Aditya'', ''Indra'', ''Rudra'', ''Visnu'', ''Brahma'', and others become equated in the Upanishads to the supreme, immortal, and incorporeal Brahman-Atman of the Upanishads, god becomes synonymous with self, and is declared to be everywhere, inmost being of each human being and within every living creature.Paul Deussen, , University of Kiel, T&T Clark, pages 342-355, 396-412 The one reality or ''ekam sat'' of the Vedas becomes the ''ekam eva advitiyam'' or "the one and only and sans a second" in the Upanishads. Brahman-Atman and self-realization develops, in the Upanishad, as the means to
moksha ''Moksha'' (; sa, मोक्ष, '), also called ''vimoksha'', ''vimukti'' and ''mukti'', is a term in Hinduism, Buddhism, Jainism and Sikhism for various forms of emancipation, enlightenment, liberation, and release. In its soteriologic ...
(liberation; freedom in this life or after-life). According to Jayatilleke, the thinkers of Upanishadic texts can be grouped into two categories. One group, which includes early Upanishads along with some middle and late Upanishads, were composed by metaphysicians who used rational arguments and empirical experience to formulate their speculations and philosophical premises. The second group includes many middle and later Upanishads, where their authors professed theories based on yoga and personal experiences. Yoga philosophy and practice, adds Jayatilleke, is "not entirely absent in the Early Upanishads". The development of thought in these Upanishadic theories contrasted with Buddhism, since the Upanishadic inquiry fails to find an empirical correlate of the assumed Atman, but nevertheless assumes its existence, " eifyingconsciousness as an eternal self." The Buddhist inquiry "is satisfied with the empirical investigation which shows that no such Atman exists because there is no evidence," states Jayatilleke.


Brahman and Atman

Two concepts that are of paramount importance in the Upanishads are ''
Brahman In Hinduism, ''Brahman'' ( sa, ब्रह्मन्) connotes the highest universal principle, the ultimate reality in the universe.P. T. Raju (2006), ''Idealistic Thought of India'', Routledge, , page 426 and Conclusion chapter part X ...
'' and ''Atman''. The Brahman is the ultimate reality and the Atman is individual self (soul). Brahman is the material, efficient, formal, and final cause of all that exists.PT Raju (2006), Idealistic Thought of India, Routledge, , page 426 and Conclusion chapter part XIIFor dualism school of Hinduism, see: Francis X. Clooney (2010), Hindu God, Christian God: How Reason Helps Break Down the Boundaries between Religions, Oxford University Press, , pages 51-58, 111-115;
For monist school of Hinduism, see: B Martinez-Bedard (2006), Types of Causes in Aristotle and Sankara, Thesis - Department of Religious Studies (Advisors: Kathryn McClymond and Sandra Dwyer), Georgia State University, pages 18-35
It is the pervasive, genderless, infinite, eternal truth and bliss which does not change, yet is the cause of all changes.James Lochtefeld, ''Brahman'', The Illustrated Encyclopedia of Hinduism, Vol. 1: A–M, Rosen Publishing. , page 122Jeffrey Brodd (2009), World Religions: A Voyage of Discovery, Saint Mary's Press, , pages 43-47 Brahman is "the infinite source, fabric, core and destiny of all existence, both manifested and unmanifested, the formless infinite substratum and from which the universe has grown". Brahman in Hinduism, states
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 ...
, is the "creative principle which lies realized in the whole world". The word ''Atman'' means the inner self, the soul, the immortal spirit in an individual, and all living beings including animals and trees. '' Richard King (1995), Early Advaita Vedanta and Buddhism, State University of New York Press, , page 64, Quote: "Atman as the innermost essence or soul of man, and Brahman as the innermost essence and support of the universe. (...) Thus we can see in the Upanishads, a tendency towards a convergence of microcosm and macrocosm, culminating in the equating of Atman with Brahman".
'' Chad Meister (2010), The Oxford Handbook of Religious Diversity, Oxford University Press, , page 63; Quote: "Even though Buddhism explicitly rejected the Hindu ideas of Atman ("soul") and Brahman, Hinduism treats Sakyamuni Buddha as one of the ten avatars of Vishnu."
'' David Lorenzen (2004), The Hindu World (Editors: Sushil Mittal and Gene Thursby), Routledge, , pages 208-209, Quote: "Advaita and nirguni movements, on the other hand, stress an interior mysticism in which the devotee seeks to discover the identity of individual soul (atman) with the universal ground of being (brahman) or to find god within himself".
Ātman is a central idea in all the Upanishads, and "Know your Ātman" their thematic focus.PT Raju (1985), Structural Depths of Indian Thought, State University of New York Press, , pages 35-36 These texts state that the inmost core of every person is not the body, nor the mind, nor the ego, but ''Atman'' – "soul" or "self". Atman is the spiritual essence in all creatures, their real innermost essential being.Alice Bailey (1973), The Soul and Its Mechanism, , pages 82-83 It is eternal, it is ageless. Atman is that which one is at the deepest level of one's existence. ''Atman'' is the predominantly discussed topic in the Upanishads, but they express two distinct, somewhat divergent themes. Younger Upanishads state that Brahman (Highest Reality, Universal Principle, Being-Consciousness-Bliss) is identical with ''Atman'', while older upanishads state ''Atman'' is part of Brahman but not identical. The Brahmasutra by Badarayana ( 100 BCE) synthesized and unified these somewhat conflicting theories. According to Nakamura, the Brahman sutras see Atman and Brahman as both different and not-different, a point of view which came to be called ''
bhedabheda Bhedābheda Vedānta is a subschool of Vedānta, which teaches that the individual self (''jīvātman'') is both different and not different from the ultimate reality known as Brahman. Etymology ''Bhedābheda'' ( Devanagari: ) is a Sanskrit wo ...
'' in later times. According to Koller, the Brahman sutras state that Atman and Brahman are different in some respects particularly during the state of ignorance, but at the deepest level and in the state of self-realization, Atman and Brahman are identical, non-different.John Koller (2012), Shankara, in Routledge Companion to Philosophy of Religion, (Editors: Chad Meister, Paul Copan), Routledge, , pages 99-102 This ancient debate flowered into various dual, non-dual theories in Hinduism.


Reality and Maya

Two different types of the non-dual Brahman-Atman are presented in the Upanishads, according to Mahadevan. The one in which the non-dual Brahman-Atman is the all-inclusive ground of the universe and another in which empirical, changing reality is an appearance (Maya). The Upanishads describe the universe, and the human experience, as an interplay of Purusha (the eternal, unchanging principles, consciousness) and
Prakṛti Prakriti ( sa, प्रकृति ) is "the original or natural form or condition of anything, original or primary substance". It is a key concept in Hinduism, formulated by its Sāṅkhya school, where it does not refer to matter or nature, b ...
(the temporary, changing material world, nature). The former manifests itself as Ātman (soul, self), and the latter as
Māyā ''Maya'' (; Devanagari: , IAST: ), literally "illusion" or "magic", has multiple meanings in Indian philosophies depending on the context. In later Vedic texts, connotes a "magic show, an illusion where things appear to be present but are not ...
. The Upanishads refer to the knowledge of ''Atman'' as "true knowledge" (''Vidya''), and the knowledge of ''Maya'' as "not true knowledge" (''Avidya'', Nescience, lack of awareness, lack of true knowledge).Ben-Ami Scharfstein (1998), A Comparative History of World Philosophy: From the Upanishads to Kant, State University of New York Press, , page 376 Hendrick Vroom explains, "the term ''Maya'' n the Upanishadshas been translated as 'illusion,' but then it does not concern normal illusion. Here 'illusion' does not mean that the world is not real and simply a figment of the human imagination. ''Maya'' means that the world is not as it seems; the world that one experiences is misleading as far as its true nature is concerned." According to Wendy Doniger, "to say that the universe is an illusion (māyā) is not to say that it is unreal; it is to say, instead, that it is not what it seems to be, that it is something constantly being made. Māyā not only deceives people about the things they think they know; more basically, it limits their knowledge." In the Upanishads, Māyā is the perceived changing reality and it co-exists with Brahman which is the hidden true reality.Archibald Edward Gough (2001), The Philosophy of the Upanishads and Ancient Indian Metaphysics, Routledge, , pages 47-48 ''Maya'', or "illusion", is an important idea in the Upanishads, because the texts assert that in the human pursuit of blissful and liberating self-knowledge, it is ''Maya'' which obscures, confuses and distracts an individual.KN Aiyar (Translator, 1914), Sarvasara Upanishad, in Thirty Minor Upanishads, page 17, Adi Shankara, , SS Sastri (Translator), Harvard University Archives, pages 191-198


Schools of Vedanta

The Upanishads form one of the three main sources for all schools of Vedanta, together with the Bhagavad Gita and the Brahmasutras. Due to the wide variety of philosophical teachings contained in the Upanishads, various interpretations could be grounded on the Upanishads. The schools of Vedānta seek to answer questions about the relation between atman and Brahman, and the relation between Brahman and the world. The schools of Vedanta are named after the relation they see between atman and Brahman: * According to
Advaita Vedanta ''Advaita Vedanta'' (; sa, अद्वैत वेदान्त, ) is a Hindu sādhanā, a path of spiritual discipline and experience, and the oldest extant tradition of the orthodox Hindu school Vedānta. The term ''Advaita'' ...
, there is no difference. * According to
Vishishtadvaita Vishishtadvaita (IAST '; sa, विशिष्टाद्वैत) is one of the most popular schools of the Vedanta school of Hindu philosophy. Vedanta literally means the in depth meaning ''of the Vedas.'' ''Vishisht Advaita'' (liter ...
the jīvātman is a part of Brahman, and hence is similar, but not identical. * According to
Dvaita Dvaita Vedanta (); (originally known as Tattvavada; IAST:Tattvavāda), is a sub-school in the Vedanta tradition of Hindu philosophy. The term Tattvavada literally means "arguments from a realist viewpoint". The Tattvavada (Dvaita) Vedanta ...
, all individual souls (jīvātmans) and matter as eternal and mutually separate entities. Other schools of Vedanta include Nimbarka's ''Dvaitadvaita'', Vallabha's ''Suddhadvaita'', and Chaitanya's ''Acintya
Bhedabheda Bhedābheda Vedānta is a subschool of Vedānta, which teaches that the individual self (''jīvātman'') is both different and not different from the ultimate reality known as Brahman. Etymology ''Bhedābheda'' ( Devanagari: ) is a Sanskrit wo ...
''. The philosopher
Adi Sankara Adi Shankara ("first Shankara," to distinguish him from other Shankaras)(8th cent. CE), also called Adi Shankaracharya ( sa, आदि शङ्कर, आदि शङ्कराचार्य, Ādi Śaṅkarācāryaḥ, lit=First Shank ...
has provided commentaries on 11 mukhya Upanishads.


Advaita Vedanta

Advaita literally means non-duality, and it is a monistic system of thought. It deals with the non-dual nature of
Brahman In Hinduism, ''Brahman'' ( sa, ब्रह्मन्) connotes the highest universal principle, the ultimate reality in the universe.P. T. Raju (2006), ''Idealistic Thought of India'', Routledge, , page 426 and Conclusion chapter part X ...
and Atman. Advaita is considered the most influential sub-school of the ''Vedanta'' school of Hindu philosophy. Gaudapada was the first person to expound the basic principles of the Advaita philosophy in a commentary on the conflicting statements of the Upanishads. Gaudapada's Advaita ideas were further developed by Shankara (8th century CE). King states that Gaudapada's main work, Māṇḍukya Kārikā, is infused with philosophical terminology of Buddhism, and uses Buddhist arguments and analogies. King also suggests that there are clear differences between Shankara's writings and the ''Brahmasutra'', and many ideas of Shankara are at odds with those in the Upanishads. Radhakrishnan, on the other hand, suggests that Shankara's views of Advaita were straightforward developments of the Upanishads and the ''Brahmasutra'', and many ideas of Shankara derive from the Upanishads. Shankara in his discussions of the Advaita Vedanta philosophy referred to the early Upanishads to explain the key difference between Hinduism and Buddhism, stating that Hinduism asserts that Atman (soul, self) exists, whereas Buddhism asserts that there is no soul, no self.Edward Roer (translator), to ''Brihad Aranyaka Upanishad'' at pages 3-4; Quote - "(...) Lokayatikas and Bauddhas who assert that the soul does not exist. There are four sects among the followers of Buddha: 1. Madhyamicas who maintain all is void; 2. Yogacharas, who assert except sensation and intelligence all else is void; 3. Sautranticas, who affirm actual existence of external objects no less than of internal sensations; 4. Vaibhashikas, who agree with later (Sautranticas) except that they contend for immediate apprehension of exterior objects through images or forms represented to the intellect."Edward Roer (Translator), to ''Brihad Aranyaka Upanishad'' at page 3, The Upanishads contain four sentences, the
Mahāvākyas The Mahāvākyas (''sing.:'' mahāvākyam, महावाक्यम्; ''plural:'' mahāvākyāni, महावाक्यानि) are "The Great Sayings" of the Upanishads, as characterized by the Advaita school of Vedanta with mahā ...
(Great Sayings), which were used by Shankara to establish the identity of Atman and Brahman as scriptural truth: * "Prajñānam brahma" - "Consciousness is Brahman" (
Aitareya Upanishad The Aitareya Upanishad (Sanskrit: ऐतरेय उपनिषद् IAST ') is a Mukhya Upanishad, associated with the Rigveda. It comprises the fourth, fifth and sixth chapters of the second book of Aitareya Aranyaka, which is one of the ...
) * "Aham brahmāsmi" - "I am Brahman" (
Brihadaranyaka Upanishad The ''Brihadaranyaka Upanishad'' ( sa, बृहदारण्यक उपनिषद्, ) is one of the Principal Upanishads and one of the first Upanishadic scriptures of Hinduism. A key scripture to various schools of Hinduism, the '' ...
) * "Tat tvam asi" - "That Thou art" (
Chandogya Upanishad The ''Chandogya Upanishad'' (Sanskrit: , IAST: ''Chāndogyopaniṣad'') is a Sanskrit text embedded in the Chandogya Brahmana of the Sama Veda of Hinduism.Patrick Olivelle (2014), ''The Early Upanishads'', Oxford University Press; , pp. 166- ...
) * "Ayamātmā brahma" - "This Atman is Brahman" ( Mandukya Upanishad)


Vishishtadvaita

The second school of Vedanta is the Vishishtadvaita, which was founded by Sri Ramanuja (1017–1137 CE). Sri Ramanuja disagreed with Adi Shankara and the Advaita school. Visistadvaita is a synthetic philosophy bridging the monistic Advaita and theistic Dvaita systems of Vedanta. Sri Ramanuja frequently cited the Upanishads, and stated that Vishishtadvaita is grounded in the Upanishads.Stafford Betty (2010), Dvaita, Advaita, and Viśiṣṭādvaita: Contrasting Views of Mokṣa, Asian Philosophy, Vol. 20, No. 2, pages 215-224, Sri Ramanuja's Vishishtadvaita interpretation of the Upanishad is a qualified
monism Monism attributes oneness or singleness (Greek: μόνος) to a concept e.g., existence. Various kinds of monism can be distinguished: * Priority monism states that all existing things go back to a source that is distinct from them; e.g., i ...
. Sri Ramanuja interprets the Upanishadic literature to be teaching a body-soul theory, states Jeaneane Fowler – a professor of Philosophy and Religious Studies, where the Brahman is the dweller in all things, yet also distinct and beyond all things, as the soul, the inner controller, the immortal. The Upanishads, according to the Vishishtadvaita school, teach individual souls to be of the same quality as the Brahman, but quantitatively they are distinct.Stafford Betty (2010), Dvaita, Advaita, and Viśiṣṭādvaita: Contrasting Views of Mokṣa, Asian Philosophy: An International Journal of the Philosophical Traditions of the East, Volume 20, Issue 2, pages 215-224 In the Vishishtadvaita school, the Upanishads are interpreted to be teaching an Ishwar (Vishnu), which is the seat of all auspicious qualities, with all of the empirically perceived world as the body of God who dwells in everything. The school recommends a devotion to godliness and constant remembrance of the beauty and love of personal god. This ultimately leads one to the oneness with abstract Brahman. The Brahman in the Upanishads is a living reality, states Fowler, and "the Atman of all things and all beings" in Sri Ramanuja's interpretation.


Dvaita

The third school of Vedanta called the Dvaita school was founded by
Madhvacharya Madhvacharya (; ; CE 1199-1278 or CE 1238–1317), sometimes anglicised as Madhva Acharya, and also known as Purna Prajna () and Ānanda Tīrtha, was an Indian philosopher, theologian and the chief proponent of the '' Dvaita'' (dualism) sch ...
(1199–1278 CE). It is regarded as a strongly theistic philosophic exposition of the Upanishads. Madhvacharya, much like Adi Shankara claims for Advaita, and Sri Ramanuja claims for Vishishtadvaita, states that his theistic Dvaita Vedanta is grounded in the Upanishads. According to the Dvaita school, states Fowler, the "Upanishads that speak of the soul as Brahman, speak of resemblance and not identity". Madhvacharya interprets the Upanishadic teachings of the self becoming one with Brahman, as "entering into Brahman", just like a drop enters an ocean. This to the Dvaita school implies duality and dependence, where Brahman and Atman are different realities. Brahman is a separate, independent and supreme reality in the Upanishads, Atman only resembles the Brahman in limited, inferior, dependent manner according to
Madhvacharya Madhvacharya (; ; CE 1199-1278 or CE 1238–1317), sometimes anglicised as Madhva Acharya, and also known as Purna Prajna () and Ānanda Tīrtha, was an Indian philosopher, theologian and the chief proponent of the '' Dvaita'' (dualism) sch ...
. Sri Ramanuja's Vishishtadvaita school and Shankara's Advaita school are both nondualism Vedanta schools,J.A.B. van Buitenen (2008)
Ramanuja - Hindu theologian and Philosopher
, Encyclopædia Britannica
both are premised on the assumption that all souls can hope for and achieve the state of blissful liberation; in contrast, Madhvacharya believed that some souls are eternally doomed and damned.


Similarities with Platonic thought

Several scholars have recognised parallels between the philosophy of
Pythagoras Pythagoras of Samos ( grc, Πυθαγόρας ὁ Σάμιος, Pythagóras ho Sámios, Pythagoras the Samian, or simply ; in Ionian Greek; ) was an ancient Ionian Greek philosopher and the eponymous founder of Pythagoreanism. His poli ...
and
Plato Plato ( ; grc-gre, Πλάτων ; 428/427 or 424/423 – 348/347 BC) was a Greek philosopher born in Athens during the Classical period in Ancient Greece. He founded the Platonist school of thought and the Academy, the first institution ...
and that of the Upanishads, including their ideas on
sources of knowledge Knowledge can be defined as awareness of facts or as practical skills, and may also refer to familiarity with objects or situations. Knowledge of facts, also called propositional knowledge, is often defined as true belief that is distin ...
, concept of justice and path to salvation, and Plato's
allegory of the cave The Allegory of the Cave, or Plato's Cave, is an allegory presented by the Greek philosopher Plato in his work ''Republic'' (514a–520a) to compare "the effect of education ( παιδεία) and the lack of it on our nature". It is written as ...
. Platonic psychology with its divisions of reason, spirit and appetite, also bears resemblance to the three '' gunas'' in the Indian philosophy of
Samkhya ''Samkhya'' or ''Sankya'' (; Sanskrit सांख्य), IAST: ') is a dualistic school of Indian philosophy. It views reality as composed of two independent principles, '' puruṣa'' ('consciousness' or spirit); and ''prakṛti'', (nature ...
. Various mechanisms for such a transmission of knowledge have been conjectured including Pythagoras traveling as far as India; Indian philosophers visiting Athens and meeting
Socrates Socrates (; ; –399 BC) was a Greek philosopher from Athens who is credited as the founder of Western philosophy and among the first moral philosophers of the ethical tradition of thought. An enigmatic figure, Socrates authored no t ...
; Plato encountering the ideas when in exile in Syracuse; or, intermediated through Persia. However, other scholars, such as
Arthur Berriedale Keith Arthur Berriedale Keith (5 April 1879 – 6 October 1944) was a Scottish constitutional lawyer, scholar of Sanskrit and Indologist. He became Regius Professor of Sanskrit and Comparative Philology and Lecturer on the Constitution of the Brit ...
, J. Burnet and A. R. Wadia, believe that the two systems developed independently. They note that there is no historical evidence of the philosophers of the two schools meeting, and point out significant differences in the stage of development, orientation and goals of the two philosophical systems. Wadia writes that Plato's metaphysics were rooted in ''this'' life and his primary aim was to develop an ideal state. In contrast, Upanishadic focus was the individual, the self (atman, soul), self-knowledge, and the means of an individual's
moksha ''Moksha'' (; sa, मोक्ष, '), also called ''vimoksha'', ''vimukti'' and ''mukti'', is a term in Hinduism, Buddhism, Jainism and Sikhism for various forms of emancipation, enlightenment, liberation, and release. In its soteriologic ...
(freedom, liberation in this life or after-life).


Translations

The Upanishads have been translated into various languages including Persian, Italian,
Urdu Urdu (;"Urdu"
'' French French (french: français(e), link=no) may refer to: * Something of, from, or related to France ** French language, which originated in France, and its various dialects and accents ** French people, a nation and ethnic group identified with Franc ...
,
Latin Latin (, or , ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally a dialect spoken in the lower Tiber area (then known as Latium) around present-day Rome, but through ...
,
German German(s) may refer to: * Germany (of or related to) **Germania (historical use) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizens of Germany, see also German nationality law **Ge ...
,
English English usually refers to: * English language * English people English may also refer to: Peoples, culture, and language * ''English'', an adjective for something of, from, or related to England ** English national ...
, Dutch, Polish, Japanese, Spanish and Russian. The
Mughal Emperor The Mughal emperors ( fa, , Pādishāhān) were the supreme heads of state of the Mughal Empire on the Indian subcontinent, mainly corresponding to the modern countries of India, Pakistan, Afghanistan and Bangladesh. The Mughal rulers styled ...
Akbar Abu'l-Fath Jalal-ud-din Muhammad Akbar (25 October 1542 – 27 October 1605), popularly known as Akbar the Great ( fa, ), and also as Akbar I (), was the third Mughal emperor, who reigned from 1556 to 1605. Akbar succeeded his father, Hum ...
's reign (1556–1586) saw the first translations of the Upanishads into Persian. His great-grandson,
Dara Shukoh Dara Shikoh ( fa, ), also known as Dara Shukoh, (20 March 1615 – 30 August 1659) was the eldest son and heir-apparent of the Mughal emperor Shah Jahan. Dara was designated with the title ''Padshahzada-i-Buzurg Martaba'' ("Prince of High Rank" ...
, produced a collection called '' Sirr-i-Akbar'' in 1656, wherein 50 Upanishads were translated from Sanskrit into Persian. Anquetil-Duperron, a French Orientalist, received a manuscript of the ''Oupanekhat'' and translated the Persian version into French and Latin, publishing the Latin translation in two volumes in 1801–1802 as ''Oupneck'hat''. The French translation was never published. More recently, several translations in french of some Upanishads or the whole of 108 have been published : by indianists
Louis Renou Louis Renou (; 26 October 1896 – 18 August 1966) was the pre-eminent French Indologist of the twentieth century. Education and Career After passing the ''agrégation'' examination in 1920, Louis Renou taught for a year at the ''lycée'' in Rouen. ...
, ''Kausitaki, Svetasvatra, Prasna, Taittiriya Upanisads'', 1948;
Jean Varenne Jean Varenne (12 June 1926 – 12 July 1997) was a French Indologist and a prominent figure of the Nouvelle Droite. He taught Sanskrit at the Aix-Marseille University, then at Jean Moulin University Lyon 3, where he was eventually nominated profes ...
, ''Mahâ-Nârâyana Upanisad'', 1960, and ''Sept Upanishads'', 1981; Alyette Degrâces-Fadh, ''Samnyâsa-Upanisad (Upanisad du renoncement)'' , 1989; Martine Buttex, ''Les 108 Upanishads'' (full translation), 2012. The Latin version was the initial introduction of the Upanishadic thought to Western scholars. However, according to Deussen, the Persian translators took great liberties in translating the text and at times changed the meaning. The first Sanskrit-to-English translation of the
Aitareya Upanishad The Aitareya Upanishad (Sanskrit: ऐतरेय उपनिषद् IAST ') is a Mukhya Upanishad, associated with the Rigveda. It comprises the fourth, fifth and sixth chapters of the second book of Aitareya Aranyaka, which is one of the ...
was made by ColebrookeSee Henry Thomas Colebrooke (1858),
Essays on the religion and philosophy of the Hindus
'. London: Williams and Norgate. In this volume, see chapter 1 (pp. 1–69), ''On the Vedas, or Sacred Writings of the Hindus'', reprinted from Colebrooke's ''Asiatic Researches'', Calcutta: 1805, Vol 8, pp. 369–476. A translation of the
Aitareya Upanishad The Aitareya Upanishad (Sanskrit: ऐतरेय उपनिषद् IAST ') is a Mukhya Upanishad, associated with the Rigveda. It comprises the fourth, fifth and sixth chapters of the second book of Aitareya Aranyaka, which is one of the ...
appears in pages 26–30 of this chapter.
in 1805, and the first English translation of the Kena Upanishad was made by Rammohun Roy in 1816. The first German translation appeared in 1832 and Roer's English version appeared in 1853. However, Max Mueller's 1879 and 1884 editions were the first systematic English treatment to include the 12 Principal Upanishads. Other major translations of the Upanishads have been by Robert Ernest Hume (13 Principal Upanishads),
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 ...
(60 Upanishads), Sarvepalli Radhakrishnan (18 Upanishads),
Patrick Olivelle Patrick Olivelle is an Indologist. A philologist and scholar of Sanskrit Literature whose work has focused on asceticism, renunciation and the dharma, Olivelle has been Professor of Sanskrit and Indian Religions in the Department of Asian Stu ...
(32 Upanishads in two books) and Bhānu Swami (13 Upanishads with commentaries of Vaiṣṇava ācāryas). Olivelle's translation won the 1998 A.K. Ramanujan Book Prize for Translation. Throughout the 1930s, Irish poet
W. B. Yeats William Butler Yeats (13 June 186528 January 1939) was an Irish poet, dramatist, writer and one of the foremost figures of 20th-century literature. He was a driving force behind the Irish Literary Revival and became a pillar of the Irish liter ...
worked with the
Indian Indian or Indians may refer to: Peoples South Asia * Indian people, people of Indian nationality, or people who have an Indian ancestor ** Non-resident Indian, a citizen of India who has temporarily emigrated to another country * South Asia ...
-born
mendicant A mendicant (from la, mendicans, "begging") is one who practices mendicancy, relying chiefly or exclusively on alms to survive. In principle, mendicant religious orders own little property, either individually or collectively, and in many inst ...
-teacher
Shri Purohit Swami Shri Purohit Swami ( – 1941) was a Hindu teacher from Maharashtra, India. Purohit was born in Badnera, Vidarbha, India to a wealthy Maharashtran Brahmin family. His parents gave him the name Shankar Gajannan Purohit. As a child he became prof ...
on their own translation of the Upanishads, eventually titled ''
The Ten Principal Upanishads ''The Ten Principal Upanishads'' is a version of the Upanishads translated by Irish poet W. B. Yeats and the Indian-born mendicant-teacher Shri Purohit Swami. The translation process occurred between the two authors throughout the 1930s and the ...
'' and published in 1938. This translation was the final piece of work published by Yeats before his death less than a year later.


Reception in the West

The German philosopher
Arthur Schopenhauer Arthur Schopenhauer ( , ; 22 February 1788 – 21 September 1860) was a German philosopher. He is best known for his 1818 work ''The World as Will and Representation'' (expanded in 1844), which characterizes the phenomenal world as the prod ...
read the Latin translation and praised the Upanishads in his main work, ''
The World as Will and Representation ''The World as Will and Representation'' (''WWR''; german: Die Welt als Wille und Vorstellung, ''WWV''), sometimes translated as ''The World as Will and Idea'', is the central work of the German philosopher Arthur Schopenhauer. The first edition ...
'' (1819), as well as in his '' Parerga and Paralipomena'' (1851). He found his own philosophy was in accord with the Upanishads, which taught that the individual is a manifestation of the one basis of reality. For Schopenhauer, that fundamentally real underlying unity is what we know in ourselves as "will". Schopenhauer used to keep a copy of the Latin ''Oupnekhet'' by his side and commented, Schopenhauer's philosophy influenced many famous people and introduced them to the Upanishads. One of them was the Austrian Physicist Erwin Schrödinger, who once wrote: Another German philosopher,
Friedrich Wilhelm Joseph Schelling Friedrich Wilhelm Joseph Schelling (; 27 January 1775 – 20 August 1854), later (after 1812) von Schelling, was a German philosopher. Standard histories of philosophy make him the midpoint in the development of German idealism, situating him b ...
, praised the ideas in the Upanishads, as did others. In the United States, the group known as the
Transcendentalists Transcendentalism is a philosophical movement that developed in the late 1820s and 1830s in New England. "Transcendentalism is an American literary, political, and philosophical movement of the early nineteenth century, centered around Ralph Wal ...
were influenced by the German idealists. Americans, such as Emerson and Thoreau embraced Schelling's interpretation of Kant's
Transcendental idealism Transcendental idealism is a philosophical system founded by German philosopher Immanuel Kant in the 18th century. Kant's epistemological program is found throughout his '' Critique of Pure Reason'' (1781). By ''transcendental'' (a term that dese ...
, as well as his celebration of the romantic, exotic, mystical aspect of the Upanishads. As a result of the influence of these writers, the Upanishads gained renown in Western countries. Danish
physicist A physicist is a scientist who specializes in the field of physics, which encompasses the interactions of matter and energy at all length and time scales in the physical universe. Physicists generally are interested in the root or ultimate cau ...
Niels Bohr said, “I go to the Upanishad to ask questions.” The poet T. S. Eliot, inspired by his reading of the Upanishads, based the final portion of his famous poem ''
The Waste Land ''The Waste Land'' is a poem by T. S. Eliot, widely regarded as one of the most important poems of the 20th century and a central work of Modernist poetry in English, modernist poetry. Published in 1922, the 434-line poem first appeared in the ...
'' (1922) upon one of its verses. According to Eknath Easwaran, the Upanishads are snapshots of towering peaks of consciousness.
Juan Mascaró Joan Mascaró, generally known as Juan (8 December 1897 – 19 March 1987) was a Spanish translator. He used the Spanish spelling of his name (Juan) because the Catalan spelling (Joan) is the same as that of the female English name "Joan". ...
, a professor at the University of Barcelona and a translator of the Upanishads, states that the Upanishads represents for the Hindu approximately what the
New Testament The New Testament grc, Ἡ Καινὴ Διαθήκη, transl. ; la, Novum Testamentum. (NT) is the second division of the Christian biblical canon. It discusses the teachings and person of Jesus, as well as events in first-century Chris ...
represents for the Christian, and that the message of the Upanishads can be summarized in the words, "the kingdom of God is within you".Juan Mascaró, The Upanishads, Penguin Classics, , page 7, 146, cover
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 his review of the Upanishads, states that the texts emphasize Brahman-Atman as something that can be experienced, but not defined. This view of the soul and self are similar, states Deussen, to those found in the dialogues of Plato and elsewhere. The Upanishads insisted on oneness of soul, excluded all plurality, and therefore, all proximity in space, all succession in time, all interdependence as cause and effect, and all opposition as subject and object.Paul Deussen
The Philosophy of the Upanishads
University of Kiel, T&T Clark, pages 150-179
Max Müller, in his review of the Upanishads, summarizes the lack of systematic philosophy and the central theme in the Upanishads as follows,


See also

* '' 100 Most Influential Books Ever Written'' *
Bhagavad Gita The Bhagavad Gita (; sa, श्रीमद्भगवद्गीता, lit=The Song by God, translit=śrīmadbhagavadgītā;), often referred to as the Gita (), is a 700- verse Hindu scripture that is part of the epic ''Mahabharata'' ( ...
*
Hinduism Hinduism () is an Indian religion or '' dharma'', a religious and universal order or way of life by which followers abide. As a religion, it is the world's third-largest, with over 1.2–1.35 billion followers, or 15–16% of the global p ...
* Prasthanatrayi *
Principal Upanishads Principal Upanishads, also known as Mukhya Upanishads, are the most ancient and widely studied Upanishads of Hinduism. Composed between 800 BCE to the start of common era, these texts are connected to the Vedic tradition. Content The Principal ...


Notes


References


Sources

* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *


Further reading

* * * * * * Müller, Max, translator
', Part I
New York: Dover Publications (1879; Reprinted in 1962), * Müller, Max, translator
', Part II
New York: Dover Publications (1884; Reprinted in 1962), *


External links



translated into English by
Swami Paramananda Paramananda (1884–1940) was a swami and one of the early Indian teachers who went to the United States to spread the Vedanta philosophy and religion there. He was a mystic, a poet and an innovator in spiritual community living. Biography Bi ...

Complete set of 108 Upanishads, Manuscripts with the commentary of Brahma-Yogin
Adyar Library

Sanskrit documents in various formats
The Upaniṣads
article in the ''
Internet Encyclopedia of Philosophy The ''Internet Encyclopedia of Philosophy'' (''IEP'') is a scholarly online encyclopedia, dealing with philosophy, philosophical topics, and philosophers. The IEP combines open access publication with peer reviewed publication of original p ...
''
The Theory of 'Soul' in the Upanishads
T. W. Rhys Davids Thomas William Rhys Davids (12 May 1843 – 27 December 1922) was an English scholar of the Pāli language and founder of the Pāli Text Society. He took an active part in founding the British Academy and London School for Oriental Studies. ...
(1899)
Spinozistic Substance and Upanishadic Self: A Comparative Study
M. S. Modak (1931)
W. B. Yeats and the Upanishads
A. Davenport (1952)
The Concept of Self in the Upanishads: An Alternative Interpretation
D. C. Mathur (1972) {{Authority control Ancient yoga texts Hindu texts Sanskrit texts Works of unknown authorship