Advaita — Non-Dual Reality
Advaita (non-duality) is the philosophical foundation of Tantra: there is ultimately only one reality — consciousness — and all apparent multiplicity is its self-expression.
Advaita (Sanskrit: a = not, dvaita = two) — non-duality — is the metaphysical foundation of the Tantric worldview. The Tantric tradition, particularly Kashmir Shaivism, takes Advaita further than even Shankara's Advaita Vedanta: not only is there no ultimate distinction between the individual self and Brahman, but there is no ultimate distinction between Brahman and the world. Everything — consciousness, matter, the divine, the mundane, liberation, bondage — is a single, self-aware, self-expressing reality. This 'pure non-dualism' (Suddhadvaita) of Kashmir Shaivism means that spiritual practice is not about transcending the world but about recognizing the world as consciousness — and that the apparent evil, suffering, and limitation of existence are not mistakes or obstacles but the necessary shadow of the divine's infinite freedom. This philosophically sophisticated response to the problem of evil has few parallels in Western philosophy.
There is nothing that is not Shiva. The world, bondage, liberation — all are the self-luminous play of consciousness.
Philosopher Thomas Nagel's controversial book 'Mind and Cosmos' argues that the materialist neo-Darwinian worldview cannot adequately explain the origin of consciousness, meaning, and value — suggesting that some form of mind-inclusive metaphysics is necessary, consistent with Tantra's consciousness-first ontology.
Tantraloka