Adi Shankara

Adi Shankara was an Indian philosopher and theologian of the early medieval period (traditionally dated to the eighth century, though the exact years are debated) who systematized and decisively advanced the school of Advaita (non-dual) Vedanta.

In a remarkably short life he composed commentaries on the principal Upanishads, the Bhagavad Gita, and the Brahma Sutras, along with independent treatises such as the Upadesa Sahasri (“A Thousand Teachings”), and is traditionally credited with founding monastic centers across the Indian subcontinent.

For the deep roots of mind-power and nonduality, Shankara provides the foundational systematic statement that the individual self (Atman) and the absolute ground of being (Brahman) are not two but identical—“Tat tvam asi,” that thou art.

In his analysis, the apparent multiplicity and separateness of the world is the product of avidya (ignorance) and maya (the superimposition of false distinctions upon undivided consciousness); bondage is therefore not a real condition to be overcome by action but a cognitive error to be dissolved by knowledge (jnana).

Liberation comes through the direct recognition of one’s identity with pure, non-dual consciousness. This framework—reality as a single consciousness, separation as illusion, transformation as a shift in knowing rather than a manipulation of the world—is the philosophical bedrock beneath later nondual teachers (Ramana Maharshi), the Western popularizers (Alan Watts), and the monistic substratum of New Thought.