Main interest(s)
Notable idea(s)
Religious career

Aruni (fl. c. 8th century BCE), also referred to as Uddalaka or Uddalaka Aruni or Uddalaka Varuni, is a revered Vedic sage of Hinduism.[1][2] He is mentioned in many Vedic era Sanskrit texts, and his philosophical teachings are among the center piece in the Brihadaranyaka Upanishad and Chandogya Upanishad, two of the oldest Upanishadic scriptures.[3][4] A famed Vedic teacher, Aruni lived a few centuries before the Buddha,[1] and attracted students from far regions of the Indian subcontinent; some of his students such as Yajnavalkya are also highly revered in the Hindu traditions.[4] Both Aruni and Yajnavalkya are among the most frequently mentioned Upanishadic teachers in Hinduism.[5]

According to Ben-Ami Scharfstein, a professor emeritus of Philosophy at Tel Aviv University, Uddalaka Aruni was one of the first philosophers in recorded history.[1] Debiprasad established Uddalaka Aruni as the first ‘natural scientist’ in the intellectual history of mankind. In the Chandogya Upanishad Aruni asks metaphysical questions concerning the nature of reality and truth, observes constant change, and asks if there is something that is eternal and unchanging. From these questions, embedded in a dialogue with his son, he presents the concept of Ātman (soul, Self) and universal Self.[6]


Uddālaka Āruṇi was a brahmin of the Gautama lineage who was from Kuru-Pañcāla. He was the pupil of Aruṇa (his father) and Patañcala Kāpya. He was the preceptor of Yājñavalkya Vājasaneya, Kahola Kauṣītaki, Proti Kausurubindi, and his own son Śvetaketu Auddālaki. He defeated Prācīnayogya Śauceya and likely Bhadrasena Ājātaśatrava in debate, but was defeated in debate by his own pupil Yājñavalkya.[7][8][9]


The name Aruni appears in many of the Principal Upanishads, in numerous verses. For example:


Sage Aruni is revered in the Hindu tradition, and like many of its revered ancient scholars, later era scholars from the earliest times attributed or named their texts after him. Some of these treatises include:


One very important work of DebiprasadScience and society in ancient India’. In this book he established Uddalaka Aruni as the first ‘natural scientist’ in the intellectual history of mankind. He wrote, ‘Uddalaka collected observations as far as his historical conditions permitted him and even went on diligently to make experiments to understand nature and man.’[24]

Theory of three elements

According to his theory, there are three elements which make up the living things, each of it is a power. The elements are heat(also heat),water and food(meaning plant).He believed the primal creation due to desire emanated hear/light, light having same desire emanated water from itself, then water having the same desire emanated food from itself, which according to him explains why there is plenty of food when it rains .Aruni explained that the existent entered these three elements and when it entered, it caused the elements to contain something of other two .Fire, for example not only contains heat but also other two elements.[25][26][27]

Atman-Brahman doctrine

One of the most well-known teachings of Atman appears in Chandogya Upanishad as the instruction of the Uddalaka Aruni to his son Shvetaketu. Uddalaka begins his explanation that one can know about the universal of a material substance from a particular object made of that substance. For example, by means of something made of clay, one can know clay; by means of an ornament made of copper, one can know copper.[28] He gives an example for atman-brahman doctrine :Just as bees collect nectar from different sources, but when gathered together they form an undifferentiated mass; just as different rivers after flowing into the ocean become one with the ocean, similarly Atman resides individually in every being but merges with the Brahman and becomes one with it. Uddalaka next asks his son to put some salt in a glass of water. Shvetaketu does so. Upon being asked by his father to fetch the salt, Shvetaketu could not find it as it had dissolved in the water. Next, Aruni asks his son to taste the water. Upon being found salty, Aruni preaches Shvetaketu instruction on the Ultimate Reality.

He says, ‘You don’t perceive that one Reality (sat) exists in your body, my son, but it is truly there. Everything which is has its being in that subtle essence. That is Reality! That is the Soul! And you are that, Shvetaketu!"[29][30][31]


Uddalaka Aruni is said to have systematized the Vedic and Upanishadic thoughts. Many Mahavakyas are ascribed to sage Uddalaka Aruni. Among those, "Tat Tvam Asi" (That thou art) of the Chandogya Upanishad is an oft-quoted thought in Hinduism. Its teacher is Uddalaka Aruni and the student his son Svetaketu.[3]

His teachings extend beyond metaphysical speculations and philosophy. Parts of his works contain the seeds of Indian atomism, because of his belief that "particles too small to be seen mass together into the substances and objects of experience".[32] Some scholars such as Hermann Jacobi and Randall Collins have compared Aruni to Thales of Miletus in their scientific methodology, calling them both as "primitive physicists" or "proto-materialist thinkers".[33][34]

In the Mahabharata

The Adi Parva describes Aruni as a disciple of Sage Ayoda-Dhaumya. Once a flood took place in the fields of the ashram. A breach was formed in the embankment. Dhaumya sent Aruni to stop the water from entering the embankment. After a long time, Aruni had not returned. So, Dhaumya went out to find Aruni. The latter lying in the breach of the embankment to prevent the water from entering it. Because of his loyalty, Aruni is also known as Uddalaka Aruni as a mark of his preceptor's respect.[35]

See also


  1. ^ a b c Ben-Ami Scharfstein (1998), A comparative history of world philosophy: from the Upanishads to Kant, Albany: State University of New York Press, pp. 9-11
  2. ^ H. C. Raychaudhuri (1972), Political History of Ancient India, Calcutta: University of Calcutta, pp. 8-9, 21–25
  3. ^ a b Lochtefeld, James G. (2002). The Illustrated Encyclopedia of Hinduism: N-Z. The Rosen Publishing Group. p. 717. ISBN 978-0-8239-3180-4.
  4. ^ a b Glucklich, Ariel (2008). The Strides of Vishnu: Hindu Culture in Historical Perspective. Oxford University Press. pp. 65–66. ISBN 978-0-19-971825-2.
  5. ^ Klostermaier, Klaus K. (2010). Survey of Hinduism, A: Third Edition. State University of New York Press. p. 158. ISBN 978-0-7914-8011-3.
  6. ^ a b Ben-Ami Scharfstein (1998). A Comparative History of World Philosophy: From the Upanishads to Kant. State University of New York Press. pp. 56–61. ISBN 978-0-7914-3683-7.
  7. ^ Macdonell, Arthur Anthony; Keith, Arthur Berriedale (1912). Vedic Index of Names and Subjects. Vol. I. John Murray. pp. 87–89.
  8. ^ Macdonell, Arthur Anthony; Keith, Arthur Berriedale (1912). Vedic Index of Names and Subjects. Vol. II. John Murray. p. 409.
  9. ^ Keith, Arthur Berriedale (1908). "The Sankhayana Aranyaka". Journal of the Royal Asiatic Society. 40 (2): 383. doi:10.1017/S0035869X00080527.
  10. ^ Deussen, Paul (1980). Sixty Upaniṣads of the Veda. Motilal Banarsidass. pp. 457, 526. ISBN 978-81-208-1468-4.
  11. ^ Deussen, Paul (1980). Sixty Upaniṣads of the Veda. Motilal Banarsidass. pp. 142–155, 156–164. ISBN 978-81-208-1468-4.
  12. ^ "Special kind of union". The Hindu. 2 April 2017. ISSN 0971-751X. Retrieved 8 January 2020.
  13. ^ "Learning proper lesson". The Hindu. 23 March 2011. ISSN 0971-751X. Retrieved 8 January 2020.
  14. ^ Deussen, Paul (1980). Sixty Upaniṣads of the Veda. Motilal Banarsidass. pp. 156–172. ISBN 978-81-208-1468-4.
  15. ^ Lipner, Julius (2000). Richard V. De Smet and Bradley J. Malkovsky (ed.). New Perspectives on Advaita Vedānta. BRILL Academic. pp. 55–66. ISBN 90-04-11666-4.
  16. ^ Deussen, Paul (1980). Sixty Upaniṣads of the Veda, Volume 1. Motilal Banarsidass. pp. 25–26. ISBN 978-81-208-1468-4.
  17. ^ Max Muller (1962), Katha Upanishad, in The Upanishads - Part II, Dover Publications, ISBN 978-0486209937, page 1 with footnote 1
  18. ^ Deussen, Paul (1980). Sixty Upaniṣads of the Veda, Volume 2. Motilal Banarsidass. pp. 982 (Uddalaka Aruni), 953 (Aruni, Auddalaki Aruni). ISBN 978-81-208-1467-7.
  19. ^ B. N. Krishnamurti Sharma (2000). History of the Dvaita School of Vedānta and Its Literature: From the Earliest Beginnings to Our Own Times. Motilal Banarsidass. pp. 567 note 16. ISBN 978-81-208-1575-9.
  20. ^ Bādarāyaṇa (1904). The Vedanta-sutras. Thompson and Company. p. 288.
  21. ^ a b Olivelle, Patrick (1992). The Samnyasa Upanisads. Oxford University Press. pp. 5, 8–9, 60. ISBN 978-0195070453.
  22. ^ Sprockhoff, Joachim F (1976). Samnyasa: Quellenstudien zur Askese im Hinduismus (in German). Wiesbaden: Kommissionsverlag Franz Steiner. ISBN 978-3515019057.
  23. ^ Olivelle, Patrick (1993). The Āśrama System: The History and Hermeneutics of a Religious Institution. Oxford University Press. pp. 118–119, 178. ISBN 978-0-19-508327-9.
  24. ^ Chattopadhyaya, Debiprasad (1977). Science and Society in Ancient India. Research India Publications.
  25. ^ COLLINS, Randall (30 June 2009). THE SOCIOLOGY OF PHILOSOPHIES. Harvard University Press. pp. 963 note 15. ISBN 978-0-674-02977-4.
  26. ^ Scharfstein, Ben-Ami (1 January 1998). A Comparative History of World Philosophy: From the Upanishads to Kant. SUNY Press. pp. 58–59. ISBN 978-0-7914-3683-7.
  27. ^ Pereira, José (1986). "Bādarāyaṇa: Creator of Systematic Theology". Religious Studies. 22 (2): 193–204. doi:10.1017/S0034412500018205. ISSN 0034-4125. JSTOR 20006275.
  28. ^
  29. ^ Dayal, S. "Unit-11 Intellectual developments and asceticism" (PDF). Archived (PDF) from the original on 25 May 2021. Retrieved 25 May 2021.
  30. ^ Paul Deussen (1905). Sixty Upanisads Of The Veda -part- Ist.
  31. ^ Humphrey, Robert. "COSMOGENESIS IN ANCIENT HINDU SCRIPTURES AND MODERN SCIENCE" (PDF). Rivier Academic Journal: 8–10.
  32. ^ Thomas McEvilley (2012), The Shape of Ancient Thought: Comparative Studies in Greek and Indian Philosophies. New York: Constable & Robinson
  33. ^ Amiya Kumar Bagchi; Chatterjee, Amita (2015). Marxism: With and Beyond Marx. Taylor & Francis. p. 143. ISBN 978-1-317-56176-7.
  34. ^ Collins, Randall (2009). The Sociology of Philosophies. Harvard University Press. pp. 963 note 15. ISBN 978-0-674-02977-4.
  35. ^ Parthasarathy Rengaswami (2013), Stories From the Mahabharata: 5. Three Disciples.