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Key Concepts

The central ideas of Advaita Vedanta and the Upanishads — each explained at three levels, with primary sources and Sanskrit text throughout.

The Central Claim
Core · Start here
आत्मा ब्रह्म
Ātman is Brahman — The Identity Claim
The individual self and the ground of all existence are not two different things. The central claim on which the entire Advaita tradition stands — what it means, why it is made, and what the four Mahāvākyas point toward.
The Ground and the Self
ब्रह्म
Brahman — the ground of all existence
Not a god standing apart from creation. The very being-consciousness-fullness that is the nature of all that exists. Sat-Cit-Ānanda.
आत्मन्
Ātman — the self
Not the ego or personality. The pure witnessing awareness present through all states of consciousness, unchanged by any of them.
सत्-चित्-आनन्द
Sat-Cit-Ānanda
Being, consciousness, bliss — the three intrinsic indicators of Brahman's nature. Not attributes added to Brahman but what Brahman is.
साक्षिन्
Sākṣī — the witness
The pure awareness that witnesses all states without being any of them — the Advaita term for Ātman in its function as unchanging ground of all experience.
The Veil and Liberation
माया
Māyā
The power by which Brahman appears as many. Not illusion — the world exists. But the ground of the world's appearance is Brahman, not the world itself.
मोक्ष
Mokṣa — liberation
Not a destination after death. The recognition that the self was never bound. Bondage was a misidentification — liberation is seeing through it.
तुरीय
Turīya
The fourth — not a fourth state but the witnessing awareness present through waking, dream, and deep sleep without being any of them.
पञ्चकोश
Pañcakośa — the five sheaths
The Taittirīya Upaniṣad's model of the five layers within which Ātman appears to be enclosed — and the practice of distinguishing Ātman from each.
The Cycle and Its Ground
संसार
Saṃsāra — the cycle
The cycle of birth, death, and rebirth driven by karma from avidyā. Not a location — a condition that Advaita's inquiry dissolves.
कर्म
Karma — action and consequence
The three types: accumulated, in-motion, being-made. Why karma prepares the mind for liberation but cannot itself produce it.
अध्यास
Adhyāsa — superimposition
Śaṅkara's foundational concept: the mutual superimposition of self and not-self. The root cause of bondage — and what the inquiry dissolves.
जीवन्मुक्त
Jīvanmukta — liberated while living
Liberation in Advaita is not death. The burnt rope holds its shape but cannot bind. What changes and what does not after recognition.
ईश्वर
Īśvara — the personal God
Brahman through the lens of māyā — creator, sustainer, dissolver. How the personal God relates to attributeless Brahman. Why Advaita is not atheism.
प्राण
Prāṇa — vital breath
The animating principle of all life. The second of the five sheaths — subtler than the physical body, grosser than the mind.
गुण
The Three Guṇas
Sattva, rajas, tamas — the three qualities of all manifest existence including the mind. Why the Advaita inquiry cultivates sattva without identifying with it.
Gauḍapāda's Advaita
अजातिवाद
Ajātivāda — non-origination
Gauḍapāda's doctrine that nothing has ever been born or has ever ceased. The most radical position in Advaita philosophy — and the one that most directly faces the question of where the world comes from.
गौडपाद
Gauḍapāda and the Māṇḍūkya Kārikā
The first systematic Advaita philosopher. His Kārikā — four chapters of verse commentary on the Māṇḍūkya Upaniṣad — is the bridge between the Upanishads and Śaṅkara's architecture.
Method and Practice
महावाक्य
The Four Mahāvākyas
The four great sentences of the Upanishads — each a direct pointing statement of Brahman-Ātman identity, from a different Upanishad and a different angle.
नेति नेति
Neti Neti — Not This, Not This
The method of negation. Every description of Brahman is negated — not to arrive at nihilism, but to exhaust the mind's habit of treating Brahman as an object.
विवेक वैराग्य
Viveka and Vairāgya
Discrimination and dispassion — the two foundational orientations the Advaita tradition says are needed before the inquiry into Brahman can succeed.
ॐ
Oṃ — the syllable
All this is Oṃ — so begins the Māṇḍūkya Upaniṣad. The four elements of Oṃ (A, U, M, and the silence after) map onto the four states of consciousness.