Advaita Vedanta — Non-Dual Vision

Adi Shankaracharya (c. 788-820 CE) is the philosopher who systematised Advaita Vedanta — consolidating and clarifying teachings found in the Upanishads, Bhagavad Gita and Brahma Sutras into the most rigorous non-dual philosophical system in the world. In a remarkably short life (he died at approximately 32), he wrote extensive commentaries on the principal Upanishads, the Bhagavad Gita and the Brahma Sutras, founded four monastic centres (mathas) across India that continue to transmit the tradition, and debated the leading philosophers of every other school — reportedly defeating them all.

Shankara's central argument: the Upanishads consistently teach that Brahman — the ultimate reality, infinite, consciousness-being-bliss (sat-chit-ananda) — is the only reality. The apparent world of multiplicity is not a second reality alongside Brahman but Brahman appearing as multiplicity through the power of Maya (creative illusion). The individual self (jiva) appears to be separate from Brahman due to ignorance (avidya) — but this apparent separation is itself the illusion. Atman (the individual self) is Brahman. Tat tvam asi — That thou art — is the central Upanishadic declaration.

Maya is one of the most misunderstood concepts in Indian philosophy — it is commonly translated as "illusion," which misleads. Maya does not mean that the world does not exist; it means that the world does not exist in the way it appears to — as a collection of independent entities separate from each other and from Brahman. The world is real as appearance but not real as substance — it has no independent existence apart from Brahman, the consciousness in which it appears.

The classic Advaita analogies: the rope mistaken for a snake in dim light — the snake is not real as a snake, but something real (the rope) is present. The dream — the dream world appears completely real while one is dreaming; waking does not reveal that the dream was nothing, but that it was a dream (a creation of the dreaming consciousness rather than an independent external reality). In both cases, the "illusion" is real at one level and unreal at another.

Brahman cannot be described because all description uses concepts, and concepts are part of the relative world that Brahman transcends. The Upanishads approach it through negation: neti neti — not this, not this. What remains when everything that can be negated has been negated? The Advaita answer: the awareness that was doing the negating — pure, self-luminous consciousness, the Atman that is Brahman.

Jnana Yoga — the path of knowledge — is the Advaita path to liberation. It is not knowledge in the intellectual sense (accumulating information about Brahman) but direct recognition (anubhava — direct experience) of what one already is. The three stages are: shravana (hearing the teaching from a qualified teacher), manana (reflecting on it until all intellectual doubts are resolved) and nididhyasana (deep contemplation until the truth is directly recognised rather than merely understood).

The qualifications traditionally required before undertaking jnana yoga are significant: viveka (discrimination between the real and the unreal), vairagya (non-attachment to the results of actions and to sense objects), shamadi-shatkam (the six inner disciplines: tranquillity, sense control, withdrawal, endurance, faith and concentration), and mumukshutva (burning desire for liberation). These are not arbitrary prerequisites but genuine psychological developments without which the teaching cannot take root.

In the 20th century, Ramana Maharshi and Nisargadatta Maharaj presented Advaita in its most direct form — self-enquiry (atma-vichara) as the immediate path. Who am I? Trace the sense of "I" to its source. The individual self that seeks liberation dissolves in the investigation of its own nature, leaving only the Self — Atman, Brahman, pure awareness — that was always already present.

The 20th century saw a remarkable flowering of Advaita teaching in the West — through Ramana Maharshi (whose teaching reached the West through Paul Brunton's A Search in Secret India, 1934), through Nisargadatta Maharaj (whose I Am That became one of the most influential spiritual books in the English language), and through numerous teachers in the lineage of both.

A distinction worth making: traditional Advaita Vedanta (as taught by Shankara and in the lineages of Ramana and Nisargadatta) emphasises the necessity of genuine practice, purification and a qualified teacher. Neo-Advaita — the popularised Western version that emerged in the 1990s — tends to collapse the teaching into the simple statement "there is no one to practise" and resist any discussion of practice or gradual development. Traditional teachers are generally critical of neo-Advaita, arguing that while the ultimate statement may be correct, presenting it without the context of genuine inquiry and practice produces intellectual understanding without transformation.