The Chandogya Upanishad (Sanskrit: छान्दोग्योपनिषद्, IAST: Chāndogyopaniṣad) is a Sanskrit text embedded in the Chandogya Brahmana of the Sama Veda of Hinduism.{[1] In the Muktika canon of 108 Upanishads, it is listed as the ninth.[2]

The Upanishad belongs to the Tandya school of the Samaveda.[1] Like Brihadaranyaka Upanishad, the Chandogya 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.[1] 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.[3][4][5]

As one of the most extensive Upanishadic compilations, it comprises eight Prapathakas (literally 'lectures' or 'chapters'), each divided into multiple sections containing numerous verses.[6][7] The volumes include a diverse array of stories and themes. As part of the poetic and chants-focused 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.[1][8]

Chandogya Upanishad is one of the most cited texts in later Bhasyas (reviews and commentaries) by scholars from the diverse schools of Hinduism, with chapter six verse 8-16 containing the famous dictum Tat Tvam Asi, "that('s how) you are."[9] According to Deutsch and Dalvi, "the entire sixth chapter is no doubt the most influential of the entire corpus of the Upanishads."[10]

Etymology

The name of the Upanishad is derived from the word Chanda or chandas, which means "poetic meter, prosody".[6][11] 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.[12]

Chronology

Chandogya Upanishad was in all likelihood composed in the earlier part of 1st millennium BCE, and is one of the oldest Upanishads.[4] The exact century of the Upanishad composition is unknown, uncertain and contested.[3]

The chronology of early Upanishads is difficult to resolve due to scant 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.[3] 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".[4]

The chronology and authorship of Chandogya Upanishad, along with the 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.[13]

Scholars have offered different estimates ranging from 800 BCE to 600 BCE, all preceding Buddhism. According to a 1998 review by Patrick Olivelle, Chandogya was composed by 7th or 6th century BCE, give or take a century or so.[4] Phillips states that Chandogya was completed after Brihadaranyaka, both probably in early part of the 8th century BCE.[3]

Structure

The text has eight Prapathakas (प्रपाठक, lectures, chapters), each with varying number of Khandas (खण्ड, volume).[7]

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.[7]

The Upanishad comprises the last eight chapters of a ten chapter Chandogya Brahmana text.[14][15] The first chapter of the Brahmana is short and concerns ritual-related hymns to celebrate a marriage ceremony[16] and the birth of a child.[14]

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.[14]

A notable structural feature of Chandogya Upanishad is that it contains many nearly identical passages and stories also found in Brihadaranyaka Upanishad, but in precise meter.[17][1]

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.[18]

Klaus Witz[who?] 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).[17]

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 Self.[17]

Content

First Prapāṭhaka

The chant of Om, the essence of all

The Chandogya Upanishad opens with the recommendation that "let a man meditate on Om".[19] It calls the syllable Om the udgitha (उद्गीथ, song, chant), and asserts that the significance of the syllable is this: 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.[20]

Rik (ऋच्, Ṛc) is speech, states the text, and Sāman (सामन्) 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.[19][20] 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.[20]

In section 1.4, the text highlights the importance of Om in the High Chant.[21]

Good and evil may be everywhere, yet life-principle is inherently good

The second volume of the first chapter continues its discussion of syllable Om, explaining its use as a struggle between Devas (gods) and Asuras (demons) – both being races derived from one Prajapati (creator of life).[24] Max Muller states that this struggle between deities and demons is considered allegorical by ancient scholars, as good and evil inclinations within man, respectively.[25] The Prajapati is man in general, in this allegory.[25] The struggle is explained as a legend, that is also found in a more complete and likely original ancient version in the Brihadaranyaka Upanishad (chapter 1.3).[24]

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".[26] 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.[24] 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.[25] 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.[26] 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.[24] 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.[26] Then the gods revered the Udgitha as Prāṇa (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.[24][25] 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.[24]

Space: the origin and the end of everything

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.[27] The debaters summarize their discussion as,

Chandogya Upanishad 1.9.1-1.9.2[27]

Max Muller notes 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.[28] Paul Deussen explains the term Brahman means the "creative principle which lies realized in the whole world".[29]