Advaita Vedanta

Advaita Vedānta — "non-dual Vedānta" — is the most influential of the Vedānta schools and arguably the most influential single system in all of Indian philosophy. Although traces of non-dual thought are present in the Upaniṣads themselves and in Gauḍapāda's Māṇḍūkya Kārikā (c. 7th century CE), the school as a systematic tradition is the work of Ādi Śaṅkarācārya (c. 788–820 CE), whose commentaries on the Brahma Sūtras, the Upaniṣads, and the Bhagavad Gītā became the canonical statement of the position.

Advaita's central claim is breathtaking in its simplicity: Brahman alone is real (brahma satyaṃ), the world is mithyā (neither real nor unreal — appearance), and the individual self (jīva) is, in essence, nothing other than Brahman (jīvo brahmaiva nāparaḥ). The plurality we experience is the work of avidyā — primal ignorance — projecting names and forms onto the one reality, much as a coiled rope is mistaken for a snake in dim light. When the rope is recognized, the snake disappears; when Brahman is realized, saṃsāra is seen never to have been.

Śaṅkara's radical move is to distinguish two levels of truth: pāramārthika satya (absolute truth — Brahman alone) and vyāvahārika satya (transactional truth — the everyday world, real for practical purposes within ignorance). All ritual, devotion, ethics, and even reasoning belong to the transactional level. They prepare the seeker for, but cannot themselves produce, the direct knowledge that liberates.

Brahman alone is real, and the individual self is identical with Brahman. Bondage is the misidentification of the self with the body-mind complex; liberation is the direct, immediate recognition that the self has always been Brahman — pure being-consciousness-bliss, beyond all change, attribute, and limitation. This recognition is not produced by action or accumulated by merit but uncovered by śravaṇa-manana-nididhyāsana — hearing the Vedānta teaching from a competent teacher, reflecting on it until doubts dissolve, and contemplating it until it becomes immediate experience.

Through Śaṅkara's tireless travel and the four maṭhas he founded — Sringeri, Dwarka, Puri, Joshimath — Advaita became the philosophical backbone of Smārta brāhmaṇical Hinduism. The five-deity (pañcāyatana) worship of the Smārta tradition, in which Śiva, Viṣṇu, Devī, Sūrya, and Gaṇeśa are venerated as forms of the one Brahman, is Advaita's devotional expression.

Even Vedānta schools that reject Advaita's conclusions are shaped by it. Rāmānuja's Śrī Bhāṣya is, in large part, a sustained refutation of Śaṅkara; Madhva defines his own system in opposition; the bhakti movements absorb Advaitic vocabulary while qualifying its conclusions. In the modern era, Vivekananda, Aurobindo, Radhakrishnan, and the Ramakrishna mission carried Advaita to the world as the philosophical core of "Hinduism" itself — a presentation simultaneously faithful and selective.

Advaita is, with Yoga, the most globally exported Indian philosophy. The neo-Advaita movement, the writings of Ramana Maharshi and Nisargadatta Maharaj, and the wider "satsang" culture of self-inquiry (ātma-vicāra) have made Śaṅkara's vocabulary — atman, Brahman, māyā, the witness — part of global spiritual speech.

For the modern seeker, Advaita answers the deepest question — who am I? — in a single direction: not the body, not the mind, not the ego, but the unchanging awareness in which all of these arise. Whether one accepts the full metaphysical apparatus or not, the practice of self-inquiry that Advaita prescribes — turning attention back on its source — has shown remarkable durability across cultures.