|Date||Uncertain, 8th to 6th century BCE|
|Philosophy||Oneness of the Atman|
|Popular verse||Tat tvam asi|
The Chandogya Upanishad (Sanskrit: , IAST: Ch?ndogyopani?ad) is a Sanskrit text embedded in the Chandogya Brahmana of the Sama Veda of Hinduism. It is one of the oldest Upanishads. It lists as number 9 in the Muktika canon of 108 Upanishads.
The Upanishad belongs to the Tandya school of the Samaveda. Like Brhadaranyaka Upanishad, the Chandogya Upanishad is an anthology of texts that must have pre-existed as separate texts, and were edited into a larger text by one or more ancient Indian scholars. The precise chronology of Chandogya Upanishad is uncertain, and it is variously dated to have been composed by the 8th to 6th century BCE in India.
It is one of the largest Upanishadic compilations, and has eight Prapathakas (literally lectures, chapters), each with many volumes, and each volume contains many verses. The volumes are a motley collection of stories and themes. As part of the poetic and chants-focussed Samaveda, the broad unifying theme of the Upanishad is the importance of speech, language, song and chants to man's quest for knowledge and salvation, to metaphysical premises and questions, as well as to rituals.
The Chandogya Upanishad is notable for its lilting metric structure, its mention of ancient cultural elements such as musical instruments, and embedded philosophical premises that later served as foundation for Vedanta school of Hinduism. It is one of the most cited texts in later Bhasyas (reviews and commentaries) by scholars from the diverse schools of Hinduism. Adi Shankara, for example, cited Chandogya Upanishad 810 times in his Vedanta Sutra Bhasya, more than any other ancient text.
The name of the Upanishad is derived from the word Chanda, which means "poetic meter, prosody". The name implies that the nature of the text relates to the patterns of structure, stress, rhythm and intonation in language, songs and chants.
The text is sometimes known as Chandogyopanishad.
Chandogya Upanishad was in all likelihood composed in the earlier part of 1st millennium BCE, and is one of the oldest Upanishads. The exact century of the Upanishad composition is unknown, uncertain and contested. The chronology of early Upanishads is difficult to resolve, states Stephen Phillips, because all opinions rest on scanty evidence, an analysis of archaism, style and repetitions across texts, driven by assumptions about likely evolution of ideas, and on presumptions about which philosophy might have influenced which other Indian philosophies. Patrick Olivelle states, "in spite of claims made by some, in reality, any dating of these documents (early Upanishads) that attempts a precision closer than a few centuries is as stable as a house of cards".
The chronology and authorship of Chandogya Upanishad, along with Brihadaranyaka and Kaushitaki Upanishads, is further complicated because they are compiled anthologies of literature that must have existed as independent texts before they became part of these Upanishads.
Scholars have offered different estimates ranging from 800 BCE to 600 BCE, all preceding Buddhism. According to a 1998 review by Olivelle, Chandogya was composed by 7th or 6th century BCE, give or take a century or so. Phillips states that Chandogya was completed after Brihadaranyaka, both probably in early part of the 1st millennium BCE.
The text has eight Prapathakas (?, lectures, chapters), each with varying number of Khandas (?, volume). Each Khanda has varying number of verses. The first chapter includes 13 volumes each with varying number of verses, the second chapter has 24 volumes, the third chapter contains 19 volumes, the fourth is composed of 17 volumes, the fifth has 24, the sixth chapter has 16 volumes, the seventh includes 26 volumes, and the eight chapter is last with 15 volumes.
The Upanishad comprises the last eight chapters of a ten chapter Chandogya Brahmana text. The first chapter of the Brahmana is short and concerns ritual-related hymns to celebrate a marriage ceremony and the birth of a child. The second chapter of the Brahmana is short as well and its mantras are addressed to divine beings at life rituals. The last eight chapters are long, and are called the Chandogya Upanishad.
The Chandogya Upanishad, like other Upanishads, was a living document. Every chapter shows evidence of insertion or interpolation at a later age, because the structure, meter, grammar, style and content is inconsistent with what precedes or follows the suspect content and section. Additionally, supplements were likely attached to various volumes in a different age.
Klaus Witz structurally divides the Chandogya Upanishad into three natural groups. The first group comprises chapters I and II, which largely deal with the structure, stress and rhythmic aspects of language and its expression (speech), particularly with the syllable Om (?, Aum). The second group consists of chapters III-V, with a collection of more than 20 Upasanas and Vidyas on premises about the universe, life, mind and spirituality. The third group consists of chapters VI-VIII that deal with metaphysical questions such as the nature of reality and soul.
The Chandogya Upanishad opens with the recommendation that "let a man meditate on Om". It calls the syllable Om as udgitha (, song, chant), and asserts that the significance of the syllable is thus: the essence of all beings is earth, the essence of earth is water, the essence of water are the plants, the essence of plants is man, the essence of man is speech, the essence of speech is the Rig Veda, the essence of the Rig Veda is the Sama Veda, and the essence of Sama Veda is udgitha.
Rik (, ?c) is speech, states the text, and S?man () is breath; they are pairs, and because they have love and desire for each other, speech and breath find themselves together and mate to produce song. The highest song is Om, asserts volume 1.1 of Chandogya Upanishad. It is the symbol of awe, of reverence, of threefold knowledge because Adhvaryu invokes it, the Hotr recites it, and Udgatr sings it.
The second volume of the first chapter continues its discussion of syllable Om (?, Aum), explaining its use as a struggle between Devas (gods) and Asuras (demons) - both being race derived from one Prajapati (creator of life). Max Muller states that this struggle between deities and demons is considered allegorical by ancient scholars, as good and evil inclinations within man, respectively. The Prajapati is man in general, in this allegory. The struggle is explained as a legend, that is also found in a more complete and likely original ancient version in the Brihadaranyaka Upanishad's chapter 1.3.
The legend in section 1.2 of Chandogya Upanishad states that gods took the Udgitha (song of Om) unto themselves, thinking, "with this [song] we shall overcome the demons". The gods revered the Udgitha as sense of smell, but the demons cursed it and ever since one smells both good-smelling and bad-smelling, because it is afflicted with good and evil. The deities thereafter revered the Udgitha as speech, but the demons afflicted it and ever since one speaks both truth and untruth, because speech has been struck with good and evil. The deities next revered the Udgitha as sense of sight (eye), but the demons struck it and ever since one sees both what is harmonious, sightly and what is chaotic, unsightly, because sight is afflicted with good and evil. The gods then revered the Udgitha as sense of hearing (ear), but the demons afflicted it and ever since one hears both what is worth hearing and what is not worth hearing, because hearing is afflicted with good and evil. The gods thereafter revered the Udgitha as Manas (mind), but the demons afflicted it and therefore one imagines both what is worth imagining and what is not worth imagining, because mind is afflicted with good and evil. Then the gods revered the Udgitha as Pra (vital breath, breath in the mouth, life-principle), and the demons struck it but they fell into pieces. Life-principle is free from evil, it is inherently good. The deities inside man - the body organs and senses of man are great, but they all revere the life-principle because it is the essence and the lord of all of them. Om is the Udgitha, the symbol of life-principle in man.
The Chandogya Upanishad, in eighth and ninth volumes of the first chapter describes the debate between three men proficient in Udgitha, about the origins and support of Udgitha and all of empirical existence. The debaters summarize their discussion as,
What is the origin of this world?
Space, said he. Verily, all things here arise out of space. They disappear back into space, for space alone is greater than these, space is the final goal.
This is the most excellent Udgitha. This is endless. The most excellent is his, the most excellent worlds does he win, who, knowing it thus, reveres the most excellent Udgitha [Om, ?].-- Chandogya Upanishad 1.9.1-1.9.2
Max Muller notes that the term "space" above, was later asserted in the Vedanta Sutra verse 1.1.22 to be a symbolism for the Vedic concept of Brahman. Paul Deussen explains the term Brahman means the "creative principle which lies realized in the whole world".
The tenth through twelfth volumes of the first Prapathaka of Chandogya Upanishad describe a legend about priests and it criticizes how they go about reciting verses and singing hymns without any idea what they mean or the divine principle they signify. The 12th volume in particular ridicules the egotistical aims of priests through a satire, that is often referred to as "the Udgitha of the dogs".
The verses 1.12.1 through 1.12.5 describe a convoy of dogs who appear before Vaka Dalbhya (literally, sage who murmurs and hums), who was busy in a quiet place repeating Veda. The dogs ask, "Sir, sing and get us food, we are hungry". The Vedic reciter watches in silence, then the head dog says to other dogs, "come back tomorrow". Next day, the dogs come back, each dog holding the tail of the preceding dog in his mouth, just like priests do holding the gown of preceding priest when they walk in procession. After the dogs settled down, they together began to say, "Him" and then sang, "Om, let us eat! Om, let us drink! Lord of food, bring hither food, bring it!, Om!".
Such satire is not unusual in Indian literature and scriptures, and similar emphasis for understanding over superficial recitations is found in other ancient texts, such as chapter 7.103 of the Rig Veda. John Oman, in his review of the satire in section 1.12 of the Chandogya Upanishad, states, "More than once we have the statement that ritual doings only provide merit in the other world for a time, whereas the right knowledge rids of all questions of merit and secures enduring bliss".
The 13th volume of the first chapter lists mystical meanings in the structure and sounds of a chant. The text asserts that h?u, h?i, ?, atha, iha, ?, e, hi? among others correspond to empirical and divine world, such as moon, wind, sun, oneself, Agni, Prajapati, and so on. The thirteen syllables listed are Stobhaksharas, sounds used in musical recitation of hymns, chants and songs. This volume is one of many sections that does not fit with the preceding text or text that follows.
The first volume of the second chapter states that the reverence for entire S?man (, chant) is s?dhu (?, good), for three reasons. These reasons invoke three different contextual meanings of Saman, namely abundance of goodness or valuable (?), friendliness or respect (), property goods or wealth (, also ?). The Chandogya Upanishad states that the reverse is true too, that people call it a-s?man when there is deficiency or worthlessness (ethics), unkindness or disrespect (human relationships), and lack of wealth (means of life, prosperity).
Volumes 2 through 7 of the second Prapathaka present analogies between various elements of the universe and elements of a chant. The latter include Hink?ra (?, preliminary vocalizing), Prast?va (, propose, prelude, introduction), Udg?tha (, sing, chant), Pratih?ra (, response, closing) and Nidhana (?, finale, conclusion). The sets of mapped analogies present interrelationships and include cosmic bodies, natural phenomena, hydrology, seasons, living creatures and human physiology. For example, chapter 2.3 of the Upanishad states,
The winds blow, that is Hink?ra
A cloud is formed, that is Prast?va
It rains, that is an Udg?tha
The lightning that strikes and thunder that rolls, that is Pratih?ra
The rains stop and clouds lift, that is Nidhana.
The eighth volume of the second chapter expand the five-fold chant structure to seven-fold chant structure, wherein ?di and Upadrava are the new elements of the chant. The day and daily life of a human being is mapped to the seven-fold structure in volumes 2.9 and 2.10 of the Upanishad. Thereafter, the text returns to five-fold chant structure in volumes 2.11 through 2.21, with the new sections explaining the chant as the natural template for cosmic phenomena, psychological behavior, human copulation, human body structure, domestic animals, divinities and others. The metaphorical theme in this volume of verses, states Paul Deussen, is that the universe is an embodiment of Brahman, that the "chant" (Saman) is interwoven into this entire universe and every phenomenon is a fractal manifestation of the ultimate reality.
The 22nd volume of the second chapter discusses the structure of vowels (svara), consonants (sparsa) and sibilants (ushman).
The Chandogya Upanishad in volume 23 of chapter 2 provides one of the earliest expositions on the broad, complex meaning of Vedic concept dharma. It includes as dharma - ethical duties such as charity to those in distress (D?na, ), personal duties such as education and self study (sv?dhy?ya, , brahmacharya, ?), social rituals such as yajna (?). The Upanishad describes the three branches of dharma as follows:
? ? ? ?
There are three branches of Dharma (religious life, duty): Yajna (sacrifice), Sv?dhy?ya (self study) and D?na (charity) are the first,
Tapas (austerity, meditation) is the second, while dwelling as a Brahmacharya for education in the house of a teacher is third,
All three achieve the blessed worlds. But the Brahmasamstha - one who is firmly grounded in Brahman - alone achieves immortality.
This passage has been widely cited by ancient and medieval Sanskrit scholars as the fore-runner to the asrama or age-based stages of dharmic life in Hinduism. The four asramas are: Brahmacharya (student), Grihastha (householder), Vanaprastha (retired) and Sannyasa (renunciation). Olivelle disagrees however, and states that even the explicit use of the term asrama or the mention of the "three branches of dharma" in section 2.23 of Chandogya Upanishad does not necessarily indicate that the asrama system was meant.
Paul Deussen notes that the Chandogya Upanishad, in the above verse, is not presenting these stages as sequential, but rather as equal. Only three stages are explicitly described, Grihastha first, Vanaprastha second and then Brahmacharya third. Yet the verse also mentions the person in Brahmasamstha - a mention that has been a major topic of debate in the Vedanta sub-schools of Hinduism. The Advaita Vedanta scholars state that this implicitly mentions the Sannyasa, whose goal is to get "knowledge, realization and thus firmly grounded in Brahman". Other scholars point to the structure of the verse and its explicit "three branches" declaration. In other words, the fourth state of Brahmasamstha among men must have been known by the time this Chandogya verse was composed, but it is not certain whether a formal stage of Sannyasa life existed as a dharmic asrama at that time. Beyond chronological concerns, the verse has provided a foundation for Vedanta school's emphasis on ethics, education, simple living, social responsibility, and the ultimate goal of life as moksha through Brahman-knowledge.
The Chandogya Upanishad presents the Madhu Vidya (honey knowledge) in first eleven volumes of the third chapter. Sun is praised as source of all light and life, and stated as worthy of meditation in a symbolic representation of Sun as "honey" of all Vedas. The Brahman is stated in these volume of verses to be the sun of the universe, and the 'natural sun' is a phenomenal manifestation of the Brahman, states Paul Deussen.
The simile of "honey" is extensively developed, with Vedas, the Itihasa and mythological stories, and the Upanishads are described as flowers. The Rig hymns, the Yajur maxims, the Sama songs, the Atharva verses and deeper, secret doctrines of Upanishads are represented as the vehicles of rasa (nectar), that is the bees. The nectar itself is described as "essence of knowledge, strength, vigor, health, renown, splendor". The Sun is described as the honeycomb laden with glowing light of honey. The rising and setting of the sun is likened to man's cyclic state of clarity and confusion, while the spiritual state of knowing Upanishadic insight of Brahman is described by Chandogya Upanishad as being one with Sun, a state of permanent day of perfect knowledge, the day which knows no night.
Gayatri meter is the symbol of the Brahman - the essence of everything, states volume 3.12 of the Chandogya Upanishad. Gayatri as speech sings to everything and protects them, asserts the text.
The first six verses of the thirteenth volume of Chandogya's third chapter state a theory of Svarga (heaven) as human body, whose doorkeepers are eyes, ears, speech organs, mind and breath. To reach Svarga, asserts the text, understand these doorkeepers. The Chandogya Upanishad then states that the ultimate heaven and highest world exists within oneself, as follows,
? ? ? ? ? ?
Now that light which shines above this heaven, higher than all, higher than everything, in the highest world, beyond which there are no other worlds, that is the same light which is within man.
This premise, that the human body is the heaven world, and that Brahman (highest reality) is identical to the Atman (Soul, Self) within a human being is at the foundation of Vedanta philosophy. The volume 3.13 of verses, goes on to offer proof in verse 3.13.8 that the highest reality is inside man, by stating that body is warm and this warm must have an underlying hidden principle manifestation of the Brahman. Max Muller states, that while this reasoning may appear weak and incomplete, but it shows that Vedic era human mind had transitioned from "revealed testimony" to "evidence-driven and reasoned knowledge". This Brahman-Atman premise is more consciously and fully developed in section 3.14 of the Chandogya Upanishad.
The Upanishad presents the ?ilya doctrine in volume 14 of chapter 3. This, states Paul Deussen, is with Satapatha Brahmana 10.6.3, perhaps the oldest passage in which the basic premises of the Vedanta philosophy are fully expressed, namely - Atman (Soul, Self inside man) exists, the Brahman is identical with Atman, God is inside man. The Chandogya Upanishad makes a series of statements in section 3.14 that have been frequently cited by later schools of Hinduism and modern studies on Indian philosophies. These are,
This whole universe is Brahman. In tranquility, let one worship It, as Tajjalan (that from which he came forth, as that into which he will be dissolved, as that in which he breathes).
Man is a creature of his Kratumaya (, will, purpose). Let him therefore have for himself this will, this purpose: The intelligent, whose body is imbued with life-principle, whose form is light, whose thoughts are driven by truth, whose self is like space (invisible but ever present), from whom all works, all desires, all sensory feelings encompassing this whole world, the silent, the unconcerned, this is me, my Self, my Soul within my heart.
This is my Soul in the innermost heart, greater than the earth, greater than the aerial space, greater than these worlds. This Soul, this Self of mine is that Brahman.
The universe, states the Chandogya Upanishad in section 3.15, is a treasure-chest and the refuge for man. This chest is where all wealth and everything rests states verse 3.15.1, and it is imperishable states verse 3.15.3. The best refuge for man is this universe and the Vedas, assert verses 3.15.4 through 3.15.7. Max Muller notes that this section incorporates a benediction for the birth of a son.
The section 3.17 of Chandogya Upanishad describes life as a celebration of a Soma-festival, whose dakshina (gifts, payment) is moral conduct and ethical precepts that includes non-violence, truthfulness, non-hypocrisy and charity unto others, as well as simple introspective life. This is one of the earliest statement of the Ahimsa principle as an ethical code of life, that later evolved to become the highest virtue in Hinduism.
? ? ? ?
Now Tapas (austerity, meditation), D?na (charity, alms-giving), Arjava (sincerity, uprightness and non-hypocrisy), Ahimsa (non-violence, don't harm others) and Satya-vacanam (truthfulness), these are the Dakshina (gifts, payment to others) he gives [in life].
The metaphor of man's life as a Soma-festival is described through steps of a yajna (fire ritual ceremony) in section 3.17. The struggles of an individual, such as hunger, thirst and events that make him unhappy, states the Upanishad, is Diksha (preparation, effort or consecration for the ceremony/festival). The prosperity of an individual, such as eating, drinking and experiencing the delights of life is Upasada (days during the ceremony/festival when some foods and certain foods are consumed as a community). When an individual lives a life of laughs, feasts and enjoys sexual intercourse, his life is akin to becoming one with Stuta and Sastra hymns of a Soma-festival (hymns that are recited and set to music), states verse 3.17.3 of the text. Death is like ablution after the ceremony.
The volumes 3.16 and 3.17 of the Chandogya Upanishad are notable for two additional assertions. One, in verse 3.16.7, the normal age of man is stated to be 116 years, split into three stages of 24, 44 and 48 year each. These verses suggest a developed state of mathematical sciences and addition by about 800-600 BCE. Secondly, verse 3.17.6 mentions Krishna Devakiputra (Sanskrit ) as a student of sage Ghora Angirasa. This mention of "Krishna as the son of Devaki", has been studied by scholars as potential source of fables and Vedic lore about the major deity Krishna in the Mahabharata and other ancient literature. Scholars have also questioned whether this part of the verse is an interpolation, or just a different Krishna Devikaputra than deity Krishna, because the much later age Sandilya Bhakti Sutras, a treatise on Krishna, cites later age compilations such as Narayana Upanishad and Atharvasiras 6.9, but never cites this verse of Chandogya Upanishad. Others state that the coincidence that both names, of Krishna and Devika, in the same verse cannot be dismissed easily and this Krishna may be the same as one found later, such as in the Bhagavad Gita.
The verse 3.17.6 states that Krishna Devikaputra after learning the theory of life is a Soma-festival, learnt the following Vedic hymn of refuge for an individual on his death bed,
Thou art the Aksitamasi (indestructible, imperishable),
Thou art the Acyutamasi (imperturbable, unchangeable),
Thou art the Prana-samsitamasi (fountainhead, crest of life-principles).
The fourth chapter of the Chandogya Upanishad opens with the story of king Janasruti and "the man with the cart" named Raikva. The moral of the story is called, Samvarga (Sanskrit: , devouring, gathering, absorbing) Vidya, summarized in volume 4.3 of the text. Air, asserts the Upanishad, is the "devourer unto itself" of divinities because it absorbs fire, sun at sunset, moon when it sets, water when it dries up. In reference to man, Prana (vital breath, life-principle) is the "devourer unto itself" because when one sleeps, Prana absorbs all deities inside man such as eyes, ears and mind. The Samvarga Vidya in Chandogya is found elsewhere in Vedic canon of texts, such as chapter 10.3.3 of Shatapatha Brahmana and sections 2.12 - 2.13 of Kaushitaki Upanishad. Paul Deussen states that the underlying message of Samvarga Vidya is that the cosmic phenomenon and the individual physiology are mirrors, and therefore man should know himself as identical with all cosmos and all beings.
The story is notable for its characters, charity practices, and its mention and its definitions of Br?hma?a and dra. King Janasruti is described as pious, extremely charitable, feeder of many destitute, who built rest houses to serve the people in his kingdom, but one who lacked the knowledge of Brahman-Atman.Raikva, is mentioned as "the man with the cart", very poor and miserable plight (he has sores on his skin), but he has the Brahman-Atman knowledge that is, "his self is identical with all beings". The rich generous king is referred to as dra, while the poor working man with the cart is called Br?hma?a (one who knows the Brahman knowledge). The story thus declares knowledge as superior to wealth and power. The story also declares the king as a seeker of knowledge, and eager to learn from the poorest. Paul Deussen notes that this story in the Upanishad, is strange and out of place with its riddles.
The Upanishad presents another symbolic conversational story of Satyakama, the son of Jabala, in volumes 4.4 through 4.9. Satyakama's mother reveals to the boy, in the passages of the Upanishad, that she went about in many places in her youth, and he is of uncertain parentage. The boy, eager for knowledge, goes to the sage Haridrumata Gautama, requesting the sage's permission to live in his school for Brahmacharya. The teacher asks, "my dear child, what family do you come from?" Satyakama replies that he is of uncertain parentage because his mother does not know who the father is. The sage declares that the boy's honesty is the mark of a "Br?hma?a, true seeker of the knowledge of the Brahman". The sage accepts him as a student in his school.
The sage sends Satyakama to tend four hundred cows, and come back when they multiply into a thousand. The symbolic legend then presents conversation of Satyakama with a bull, a fire, a swan (Hamsa, ) and a diver bird (Madgu, ), which respectively are symbolism for Vayu, Agni, ?ditya and Pra. Satyakama then learns from these creatures that forms of Brahman is in all cardinal directions (north, south, east, west), world-bodies (earth, atmosphere, sky and ocean), sources of light (fire, sun, moon, lightning), and in man (breath, eye, ear and mind). Satyakama returns to his teacher with a thousand cows, and humbly learns the rest, the nature of Brahman.
The story is notable for declaring that the mark of a student of Brahman is not parentage, but honesty. The story is also notable for the repeated use of the word Bhagavan to mean teacher during the Vedic era.
The volumes 4.10 through 4.15 of Chandogya Upanishad present the third conversational story through a student named Upakosala. The boy Satyakama Jabala described in volumes 4.4 through 4.9 of the text, is declared to be the grown up Guru (teacher) with whom Upakosala has been studying for twelve years in his Brahmacharya.
Upakosala has a conversation with sacrificial fires, which inform him that Brahman is life, Brahman is joy and bliss, Brahman is infinity, and the means to Brahman is not through depressing, hard penance. The fires then enumerate the manifestations of Brahman to be everywhere in the empirically perceived world. Satyakama joins Upakosala's education and explains, in volume 4.15 of the text,
The person that is seen in the eye, that is the Atman (Soul, Self). The Atman is the immortal one, the fearless one, the Brahman.
The Upanishad asserts in verses 4.15.2 and 4.15.3 that the Atman is the "stronghold of love", the leader of love, and that it assembles and unites all that inspires love. Those who find and realize the Atman, find and realize the Brahman, states the text.
The fifth chapter of the Chandogya Upanishad opens with the declaration,
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Indeed, he who knows the noblest and the best, becomes the noblest and the best.-- Chandogya Upanishad 5.1.1
The first volume of the fifth chapter of the text tells a fable and prefaces each character with the following maxims,
The fable, found in many other Principal Upanishads, describes a rivalry between eyes, ears, speech, mind. They all individually claim to be "most excellent, most stable, most successful, most homely". They ask their father, Prajapati, as who is the noblest and best among them. Prajapati states, "he by whose departure, the body is worst off, is the one". Each rivaling organ leaves for a year, and the body suffers but is not worse off. Then, Prana (breath, life-principle) prepares to leave, and all of them insist that he stay. Prana, they acknowledge, empowers them all.
The volumes 5.3 through 5.10 of Chandogya Upanishad present the Pancagnividya, or the doctrine of "five fires and two paths in after-life". These sections are nearly identical to those found in section 14.9.1 of Sathapatha Brahmana, in section 6.2 of Brihadaranyaka Upanishad, and in chapter 1 of Kaushitaki Upanishad. Paul Deussen states that the presence of this doctrine in multiple ancient texts suggests that the idea is older than these texts, established and was important concept in the cultural fabric of the ancient times. There are differences between the versions of manuscript and across the ancient texts, particularly relating to reincarnation in different caste based on "satisfactory conduct" and "stinking conduct" in previous life, which states Deussen, may be a supplement inserted only into the Chandogya Upanishad later on.
The two paths of after-life, states the text, are Devayana - the path of the Devas (gods), and Pitryana - the path of the fathers. The path of the fathers, in after-life, is for those who live a life of rituals, sacrifices, social service and charity - these enter heaven, but stay there in proportion to their merit in their just completed life, then they return to earth to be born as rice, herbs, trees, sesame, beans, animals or human beings depending on their conduct in past life. The path of the Devas, in after-life, is for those who live a life of knowledge or those who enter the forest life of Vanaprastha and pursue knowledge, faith and truthfulness - these do not return, and in their after-life join unto the Brahman.
All existence is a cycle of fire, asserts the text, and the five fires are: the cosmos as altar where the fuel is sun from which rises the moon, the cloud as altar where the fuel is air from which rises the rain, the earth as altar where the fuel is time (year) from which rises the food (crops), the man as altar where the fuel is speech from which rises the semen, and the woman as altar where the fuel is sexual organ from which rises the fetus. The baby is born in the tenth month, lives a life, and when deceased, they carry him and return him to the fire because fire is where he arose, whence he came out of.
The verse 5.10.8 of the Chandogya Upanishad is notable for two assertions. One, it adds a third way for tiny living creatures (flies, insects, worms) that neither take the Devayana nor the Pitryana path after their death. Second, the text asserts that the rebirth is the reason why the yonder-world never becomes full (world where living creatures in their after-life stay temporarily). These assertions suggest an attempt to address rationalization, curiosities and challenges to the reincarnation theory.
The Chandogya Upanishad opens volume 5.11 with five adults seeking knowledge. The adults are described as five great householders and great theologians who once came together and held a discussion as to what is our Self, and what is Brahman?
The five householders approach a sage named Uddalaka Aruni, who admits his knowledge is deficient, and suggests that they all go to king Asvapati Kaikeya, who knows about Atman Vaishvanara. When the knowledge seekers arrive, the king pays his due respect to them, gives them gifts, but the five ask him about Vaisvanara Self.
The answer that follows is referred to as the "doctrine of Atman Vaishvanara", where Vaisvanara literally means "One in the Many". The entire doctrine is also found in other ancient Indian texts such as the Satapatha Brahmana's section 10.6.1. The common essence of the theory, as found in various ancient Indian texts, is that "the inner fire, the soul, is universal and common in all men, whether they are friends or foe, good or bad". The Chandogya narrative is notable for stating the idea of unity of the universe, of realization of this unity within man, and that there is unity and oneness in all Atman. This idea of universal oneness of all souls, seeing others as oneself, seeing Brahman as Atman and Atman as Brahman, became a foundational premise for Vedanta theologians.
The sixth chapter of the Chandogya Upanishad contains the famous Tat Tvam Asi ("That Thou art") precept, one regarded by scholars as the sum-total or as one of the most important of all Upanishadic teachings. The precept is repeated nine times at the end of sections 6.8 through 6.16 of the Upanishad, as follows,
? ? ?
Translation 1: This universe consists of what that finest essence is, it is the real, it is the soul, that thou art, O ?vetaketu!
Translation 2: That which is the finest essence - this whole world has that as its soul. That is Reality. That is Atman (Soul). That art thou, ?vetaketu.
Translation 3: That which is this finest essence, that the whole world has as its self. That is the truth. That is the self. In that way are you, ?vetaketu.-- Chandogya Upanishad, 6.8 - 6.16
The Tat Tvam Asi precept emerges in a spiritual conversation between a father and son, Uddalaka Aruni and 24-year-old ?vetaketu Aruneya respectively, after the father sends his boy to school saying "go to school ?vetaketu, as no one in our family has ever gone to school", and the son returns after completing 12 years of school studies. The father inquires if ?vetaketu had learnt at school that by which "we perceive what cannot be perceived, we know what cannot be known"? ?vetaketu admits he hasn't, and asks what that is. His father, through 16 volumes of verses of Chandogya Upanishad, explains.
Uddalaka states in volume 1 of chapter 6 of the Upanishad, that the essence of clay, gold, copper and iron each can be understood by studying a pure lump clay, gold, copper and iron respectively. The various objects produced from these materials do not change the essence, they change the form. Thus, to understand something, studying the essence of one is the path to understanding the numerous manifested forms.
The text in volume 2, through Uddalaka, asserts that there is disagreement between people on how the universe came into existence, whether in the beginning there was a Sat (, Truth, Reality, Being) without a second, or whether there was just A-sat (?, Nothingness, non-Being) without a second. Uddalaka states that it is difficult to comprehend that the universe was born from nothingness, and so he asserts is that there was "one Sat only, without a second" in the beginning. This one then sent forth heat, to grow and multiply. The heat in turn wanted to multiply, so it produced water. The water wanted to multiply, so it produced food.
In the verses of volume 3, Uddalaka asserts that life emerges through three routes: an egg, direct birth of a living being, and as life sprouting from seeds. The Sat enters these and gives them individuality, states the Upanishad. Heat, food and water nourish all living beings, regardless of the route they are born. Each of these nourishment has three constituents, asserts the Upanishad in volumes 4 through 7 of the sixth chapter. It calls it the coarse, the medium and the finest essence. These coarse becomes waste, the medium builds the body or finest essence nourishes the mind. Section 6.7 states that the mind depends on the body and proper food, breath depends on hydrating the body, while voice depends on warmth in the body, and that these cannot function without.
After setting this foundation of premises, Uddalaka states that heat, food, water, mind, breath and voice are not what defines or leads or is at the root (essence) of every living creature, rather it is the Sat inside. This Eternal Truth is the home, the core, the root of each living being. To say that there is no root, no core is incorrect, because "nothing is without a root cause", assert verses 6.8.3 through 6.8.5 of the Upanishad. The Self, the Soul (Atman) is this root, it is the essence, it is at the core of all living beings. It is True, it is Real, it is the Self, and Thou Art That, ?vetaketu.
Living beings are like rivers that arise in the mountains, states the Upanishad, some rivers flow to the east and some to the west, yet they end in an ocean, become the ocean itself, and realize they are not different but are same, and thus realize their Oneness. Uddalaka states in volume 6.10 of the Upanishad, that there comes a time when all human beings and all creatures know not, "I am this one, I am that one", but realize that they are One Truth, One Reality, and the whole world is one Atman.
Living beings are like trees, asserts the Upanishad, that bleed when struck and injured, yet the tree lives on with its Soul as resplendent as before. It is this Atman, that despite all the suffering inflicted on a person, makes him to stand up again, live and rejoice at life. Body dies, life doesn't.
The soul and the body are like salt and water, states the Upanishad in volume 6.13. Salt dissolves in water, it is everywhere in the water, it cannot be seen, yet it is there and exists forever no matter what one does to the water. The Sat is forever, and this Sat is the soul, the essence, it exists, it is true, asserts the text.
Man's journey to self-knowledge and self-realization, states volume 6.14 of Chandogya Upanishad, is like a man who is taken from his home in Gandharas, with his eyes covered, into a forest full of life-threatening dangers and delicious fruits, but no human beings. He lives in confusion, till one day he removes the eye cover. He then finds his way out of the forest, then finds knowledgeable ones for directions to Gandharas. He receives the directions, and continues his journey on his own, one day arriving home and to happiness. The commentators to this section of Chandogya Upanishad explain that in this metaphor, the home is Sat (Truth, Reality, Brahman, Atman), the forest is the empirical world of existence, the "taking away from his home" is symbolism for man's impulsive living and his good and evil deeds in the empirical world, eye cover represent his impulsive desires, removal of eye cover and attempt to get out of the forest represents the seeking meaning of life and introspective turn to within, the knowledgeable ones giving directions is symbolism for spiritual teachers and guides.
The seventh chapter of the Chandogya Upanishads opens as a conversation between Sanatkumara and Narada. The latter asks, "teach me, Sir, the knowledge of Soul, because I hear that anyone who knows the Soul, is beyond suffering and sorrow". Sanatkumara first inquires from Narada what he already has learnt so far. Narada says, he knows the Rig Veda, the Sama Veda, the Yajur Veda, the Atharva Veda, the epics and the history, the myths and the ancient stories, all rituals, grammar, etymology, astronomy, time keeping, mathematics, politics and ethics, warfare, principles of reasoning, divine lore, prayer lore, snake charming, ghosts lore and fine arts. Narada admits to Sanatkumara that none of these have led him to Self-knowledge, and he wants to know about Self and Self-knowledge.
Sanatkumara states that Narada, with the worldly knowledge, has so far focussed on name. Adore and revere the worldly knowledge asserts Sanatkumara in section 7.1 of the Upanishad, but meditate on all that knowledge as the name, as Brahman. Narada asks Sanatkumara to explain, and asks what is better than the worldly knowledge. In volumes 2 through 26 of the seventh chapter, the Upanishad presents, in the words of Sanatkumara, a hierarchy of progressive meditation, from outer worldly knowledge to inner worldly knowledge, from finite current knowledge to infinite Atman knowledge, as a step wise journey to Self and infinite bliss. This hierarchy, states Paul Deussen, is strange, convoluted possibly to incorporate divergent prevailing ideas in the ancient times. Yet in its full presentation, Deussen remarks, "it is magnificent, excellent in construction, and commands an elevated view of man's deepest nature".
In its exposition of progressive meditation for Self-knowledge, the Chandogya Upanishad starts by referring to the outer worldly knowledges as name. Deeper than this name, is speech asserts verse 7.2.1, because speech is what communicates all outer worldly knowledge as well as what is right and what is wrong, what is true and what is false, what is good and what is bad, what is pleasant and what is unpleasant. Without speech, men can't share this knowledge, and one must adore and revere speech as manifestation of Brahman.
More elevated than Speech, asserts section 7.3 of the Upanishad, is Manas (?, mind) because Mind holds both Speech and Name (outer worldly knowledges). One must adore and revere Mind as Brahman. Deeper than Mind, asserts section 7.4 of the Upanishad, is Sankalpa (?, will, conviction) because when a man Wills he applies his Mind, when man applies his Mind he engages Speech and Name. One must adore and revere Will as manifestation of Brahman. Higher than Will, states section 7.5 of the Upanishad, is Chitta (, thought, consciousness) because when a man Thinks he forms his Will. One must adore and revere Thought as manifestation of Brahman. Greater than Thought, asserts section 7.6 of the Upanishad, is Dhyanam (, meditation, reflection) because when a man Meditates he Thinks. One must adore and revere Meditation as the manifestation of Brahman. Deeper than Meditation, states section 7.7 of the Upanishad, is Vijñana (?, knowledge, understanding) because when a man Understands he continues Meditating. One must adore and revere Understanding as the Brahman.
Thereafter, for a few steps, states Paul Deussen, the Upanishad asserts a hierarchy of progressive meditation that is unusual and different from the broader teachings of the Upanishads. The text states in section 7.8, that higher than Understanding is Bala (, strength, vigor) because a Strong man physically prevails over the men with Understanding. "By strength does the world stand", states verse 7.8.1 of Chandogya Upanishad. One must adore and revere Strength as the manifestation of Brahman. Higher than Strength, states section 7.9 of the Upanishad, is Anna (, food, nourishment) because with proper Food, man becomes Strong. One must adore and revere Food as manifestation of Brahman. Greater than Food, states section 7.10 of the Upanishad, is ?pah (, water) because without Water one cannot grow Food, famines strike and living creatures perish. One must adore and revere Water as the Brahman. Higher than Water, asserts section 7.11 of the Upanishad, is Tejas (, heat, fire) because it is Heat combined with Wind and Atmosphere that bring Rain Water. One must adore and revere Heat as the manifestation of Brahman. Higher than Heat, states section 7.12 of the Upanishad, is ?k?sa (?, space, ether) because it is Space where the sun, moon, stars and Heat reside. One must adore and revere the Space as the Brahman.
The Upanishad thereafter makes an abrupt transition back to inner world of man. The text states in section 7.13, that deeper than Space is Smara (, memory) because without memory universe to man would be as if it didn't exist. One must adore and revere Memory as the manifestation of Brahman, states the text. Deeper than Memory is Asha (, hope), states section 7.14 of the Upanishad, because kindled by Hope the Memory learns and man acts. One must adore and revere Hope as the Brahman. Still deeper than Hope is Pr?na (, vital breath, life-principle), because life-principle is the hub of all that defines a man, and not his body. That is why, asserts the text, people cremate a dead body and respect a living person with the same body. The one who knows life-principle, states the Upanishad, becomes Ativadin (speaker with inner confidence, speaker of excellence).
The Chandogya Upanishad, in sections 7.16 through 7.26 presents a series of connected statements, as follows
He who speaks with excellence is one who speaks of Truth, therefore one must desire to understand the Truth (Satya, ?),
He who Understands the Truth speaks the Truth, therefore one must desire to understand what is Understanding (Vijñana, ?),
He who Thinks understands Understanding, therefore one must desire to understand Thought (Mati, ),
He who has Belief is the one who Thinks, therefore one must desire to understand why one Believes (?raddh?, ),
He who Grows Forth is the one who Believes, therefore one must desire to understand what yields Growing Forth (Nististhati, ),
He who is Creatively Active is the one who Grows Forth, therefore one must desire to understand why one pursues Creative Activity (Krti, ?),
He who experiences Joy for Oneself is the one who engages in Creative Activity, therefore one must desire to understand what is Joy (Sukham, ?),
Joy is a sense of Unlimitedness and Infinite potential within, therefore one must desire to understand what is Unlimitedness (Bhuman, ),
Unlimitedness is when one sees nothing else, hears nothing else, aware of nothing else,
when one is founded on its own greatness or not greatness at all,
when one is not established upon another,
when one's Soul, indeed, is this whole world,
when one understands this, one loves the Soul, delights in the Soul, revels in the Soul, rejoices in the Soul,
He who is thus autonomous (Svaraj, ?), it is he who has unlimited freedom in all the worlds.
He sees, thinks, understands and knows everything as his Self. This whole world is his Soul.
To one who sees, perceives and understands Self (Soul) as Truth, asserts the Upanishad in section 7.26, the life-principle springs from the Self, hope springs from the Self, memory springs from the Self, as does mind, thought, understanding, reflection, conviction, speech, and all outer worldly knowledges.
The eight chapter of the Chandogya Upanishad opens by declaring the body one is born with as the "city of Brahman", and in it is a palace that is special because the entire universe is contained within it. Whatever has been, whatever will be, whatever is, and whatever is not, is all inside that palace asserts the text, and the resident of the palace is the Brahman, as Atman - the Self, the Soul. Those who do not discover that Self within themselves are unfree, states the text, those who do discover that Self-knowledge gain the ultimate freedom in all the worlds. The Upanishad describes the potential of self-knowledge with the parable of hidden treasure, as follows,
[Where Brahman-Atman dwells], there are all our true desires, but hidden by what is false. As people who do not know the country, walk again and again over undiscovered gold that is hidden below inside the earth, thus do people live with Brahman and yet do not discover it because they do not seek to discover the true Self in that Brahman dwelling inside them.
Man has many desires of food and drink and song and music and friends and objects, and fulfillment of those desires make him happy states the Chandogya Upanishad in sections 8.2 and 8.3; but those desires are fleeting, and so is the happiness that their fulfillment provides because both are superficial and veiled in untruth. Man impulsively becomes a servant of his unfulfilled superficial desires, instead of reflecting on his true desires. Serenity comes from knowing his true desire for Self, realizing the Soul inside oneself, asserts the text.
Theosophist Charles Johnston calls this section to be a Law of Correspondence, where the macrocosm of the universe is presented as microcosm within man, that all that is infinite and divine is within man, that man is the temple and God dwells inside him.
The Upanishad in section 8.5 and 8.6 states that the life of student (Brahmacharya) guided by a teacher is the means to knowledge, and the process of meditation and search the means of realizing Atman. The verse 8.5.1 asserts that such life of a student is same as the yajna (fire ritual), the istam (oblations offered during the fire ritual), the sattrayanam (community fire ritual festival), the maunam (ritual of ascetic silence), the anasakayanam (fasting ritual), and the aranyayanam (a hermit life of solitude in the forest). The section thus states all external forms of rituals are equivalently achievable internally when someone becomes a student of sacred knowledge and seeks to know the Brahman-Atman.
The sections 8.7 through 8.12 of the Chandogya Upanishad return to the question, "what is true Self, and what is not"? The opening passage declares Self as the one that is eternally free of grief, suffering and death, it is happy, serene being that desires, feels and thinks what it ought to. Thereafter, the text structures its analysis of true and false Atman as four answers. The three Self, which are false Self, asserts the text are the material body, corporeal self in dreams, individual self in deep sleep, while the fourth is the true Self - the self in beyond deep sleep state that is one with others and the entire universe.
With the knowledge of the Brahman, asserts the text, one goes from darkness to perceiving a spectrum of colors and shakes off evil. This knowledge of Self is immortal, and the one who knows his own self joins the glory of the Brahman-knowers, the glory of Rajas (kings) and the glory of the people. The one who knows his soul, continues to study the Vedas and concentrates on his soul, who is harmless towards all living beings, who thus lives all his life, reaches the Brahma-world and does not return, states Chandogya Upanishad in its closing chapter.
Several major Bhasya (reviews, commentaries) on Chandogya Upanishad have been written by Sanskrit scholars of ancient and medieval India. These include those by Adi Shankara, Madhvacharya, Dramidacharya, Brahmanandi Tankacharya, and Ramanuja.
Max Muller has translated, commented and compared Chandogya Upanishad with ancient texts outside India. For example, the initial chapters of the Upanishad is full of an unusual and fanciful etymology section, but Muller notes that this literary stage and similar etymological fancy is found in scriptures associated with Moses and his people in their Exodus across the Red Sea, as well as in Christian literature related to Saint Augustine of 5th century CE.
Klaus Witz in his review of the Chandogya Upanishad states, "the opulence of its chapters is difficult to communicate: the most diverse aspects of the universe, life, mind and experience are developed into inner paths. (...) Chapters VI-VII consist of vidyas of great depth and profundity".
John Arapura states, "The Chandogya Upanishad sets forth a profound philosophy of language as chant, in a way that expresses the centrality of the Self and its non-duality".
Arthur Schopenhauer admired and often quoted from Chandogya Upanishad, particularly the phrase "Tat tvam asi", which he would render in German as "Dies bis du", and equates in English to "This art thou." One important teaching of Chandogya Upanishad, according to Schopenhauer is that compassion sees past individuation, comprehending that each individual is merely a manifestation of the one will; you are the world as a whole. Each and every living creature is understood, in this Chandogya Upanishad-inspired fundamental doctrine of Hinduism, to be a manifestation of the same underlying nature, where there is a deep sense of interconnected oneness in every person and every creature, and that singular nature renders each individual being identical to every other.