Brihadaranyaka Upanishad
बृहदारण्यकोपनिषद्
Type
Shruti
Date
800–600 BCE
Author
Revealed (principal teachings attributed to sage Yajnavalkya, with dialogues involving Maitreyi, Gargi Vachaknavi, King Janaka, and other sages — embedded within the Shatapatha Brahmana of the Shukla Yajurveda)
Structure
6 Adhyayas (chapters) divided into 3 Kandas — Madhu Kanda (chapters 1–2), Muni Kanda or Yajnavalkya Kanda (chapters 3–4), and Khila Kanda (chapters 5–6) — containing 47 Brahmanas (sections) with approximately 435 mantras
Language
Vedic Sanskrit
Core Teaching
The Brihadaranyaka Upanishad, the largest and among the most ancient of the principal Upanishads, teaches that Brahman — pure, infinite, non-dual consciousness — is the sole reality, and that the individual Atman is identical with this universal Brahman. Its central Mahavakya, 'Aham Brahmasmi' (I am Brahman), declares that self-knowledge is not the acquisition of something new but the direct recognition of what one already is. Through Yajnavalkya's masterful dialogues, the text establishes the method of 'neti neti' (not this, not this), negating all finite attributes to reveal the Atman as the irreducible witness-consciousness that can never be objectified. The Upanishad teaches that Brahman is 'Satyasya Satyam' — the Truth of truth, the Reality behind all appearances — and that this realization dissolves the fear born of perceived duality. It also presents the Madhu Vidya (doctrine of mutual interdependence), the ethical foundations of self-restraint (dama), generosity (dana), and compassion (daya), and the doctrine that the Self alone is the dearest of all things, for it is for the sake of the Self that everything else is loved.
Key Verses
अहं ब्रह्मास्मि।
Ahaṁ brahmāsmi
I am Brahman.
This Mahavakya from Adhyaya 1.4.10 is one of the four great sayings of the Upanishads and the most direct declaration of non-dual identity. It records the primordial moment of self-recognition: when the Self first knew itself, it declared 'I am Brahman,' and by that knowledge became the All. Shankaracharya identifies this not as an egoistic claim but as the statement of the Atman recognizing its true nature beyond all limiting adjuncts, making it the foundational utterance of Advaita Vedanta.
आत्मा वा अरे द्रष्टव्यः श्रोतव्यो मन्तव्यो निदिध्यासितव्यः। मैत्रेयि आत्मनो वा अरे दर्शनेन श्रवणेन मत्या विज्ञानेन इदं सर्वं विदितम्।
Ātmā vā are draṣṭavyaḥ śrotavyo mantavyo nididhyāsitavyaḥ. Maitreyī ātmano vā are darśanena śravaṇena matyā vijñānena idaṁ sarvaṁ viditam.
The Self, verily, O Maitreyi, should be seen, heard, reflected upon, and deeply meditated upon. By the realization of the Self, O Maitreyi, through hearing, reflection, and meditation, all this becomes known.
This verse from Adhyaya 2.4.5, spoken by Yajnavalkya to his wife Maitreyi, establishes the foundational methodology of Vedantic practice: shravana (hearing the teaching), manana (rational reflection), and nididhyasana (sustained contemplative meditation). It declares that knowing the Self is not one among many forms of knowledge but the singular knowledge by which everything else is known, since the Self is the substratum of all experience. This verse became the canonical source for the three-fold sadhana (spiritual practice) prescribed by all later Vedantic teachers.
यत्र हि द्वैतमिव भवति तदितर इतरं पश्यति... यत्र त्वस्य सर्वमात्मैवाभूत् तत्केन कं पश्येत्।
Yatra hi dvaitam iva bhavati tad itara itaraṁ paśyati... yatra tv asya sarvam ātmaivābhūt tat kena kaṁ paśyet.
Where there seems to be duality, there one sees another... But where everything has become one's own Self, then by what and whom should one see?
This passage from Adhyaya 4.5.15 is the climax of Yajnavalkya's second teaching to Maitreyi and the supreme statement of non-duality in the Upanishadic literature. Yajnavalkya explains that all perception, cognition, and relationship presuppose a subject-object duality, but in the state of ultimate realization, when everything is known as the Self, the very structure of knowledge collapses into pure undifferentiated awareness. This teaching became the cornerstone of Advaita Vedanta's doctrine that liberation is not an experience of something new but the cessation of the ignorance that projected multiplicity onto the non-dual Self.
Why It Matters
The Brihadaranyaka Upanishad is the largest, most comprehensive, and arguably the most philosophically significant of all the Upanishads. As the concluding portion of the Shatapatha Brahmana of the Shukla Yajurveda, it represents the apex of Vedic thought — the point where ritualism gives way entirely to the pursuit of liberating self-knowledge. It contains 'Aham Brahmasmi,' one of the four Mahavakyas, and Yajnavalkya's dialogues within it constitute the most sustained and rigorous philosophical inquiry found anywhere in ancient literature. The text is remarkable for featuring two of the earliest known women philosophers — Maitreyi, who chooses immortal knowledge over wealth, and Gargi Vachaknavi, who challenges Yajnavalkya in public debate — making it a powerful witness to the intellectual dignity accorded to women in Vedic culture. Its method of 'neti neti' (not this, not this) established apophatic inquiry as a central tool of Indian philosophy, while its teaching that the Self is the ultimate ground of all love ('It is for the sake of the Self that everything is dear') anticipates profound insights into the nature of consciousness and relationship. For modern seekers, the Brihadaranyaka addresses the deepest existential questions: What survives death? What is the nature of consciousness? Why do we love? Its teaching that fearlessness arises when one no longer perceives a second — a separate other — offers a radical foundation for ethics, psychology, and spiritual practice. Shankaracharya, Madhvacharya, and Ramanuja all wrote major commentaries on this Upanishad, testifying to its centrality across all schools of Vedanta.
Recommended Level
Level 5
Est. reading: 12–18 hours for full text with commentary
Recommended Translation
The Bṛhadāraṇyaka Upaniṣad with the Commentary of Śaṅkarācārya, translated by Swami Madhavananda (Advaita Ashrama, 1950) — the most authoritative traditional translation with Shankara's complete Bhashya; also recommended: Eight Upanishads (Volume 1) by Swami Gambhirananda (Advaita Ashrama) and Patrick Olivelle's Upanishads (Oxford World's Classics, 1996) for a critical scholarly rendering