A shared vocabulary, not a single creed
Sanātana Dharma is often described as less a religion than a family of traditions. What holds that family together is not a single creed or a single God but a shared set of concepts — a vocabulary that every school, from the ritualists of Mīmāṃsā to the non-dualists of Advaita Vedānta, uses to think.
These concepts form a tightly interlocking web. Dharma (the order that sustains) frames karma (action and its consequence), which drives saṃsāra (the cycle of rebirth), from which mokṣa (liberation) is release. The nature of the self that is bound and then freed — ātman — and its relationship to ultimate reality — brahman — is the central question over which the schools divide.
This Codex documents 47 concepts in total, from the most foundational to the technical vocabulary of the philosophical schools (vivartavāda, pariṇāmavāda, sphoṭa) and the inner states of practice (turīya, kaivalya, jīvanmukta).
The concepts everything rests on
Six concepts carry the weight of the whole tradition. Understand these and the entire literature opens.
How the 47 concepts group together
Beyond the six foundations, the concepts cluster into recognisable families.
The metaphysics of nature — Sāṃkhya's analysis of reality: puruṣa (consciousness) and prakṛti (nature), the three guṇas (sattva, rajas, tamas), and ahaṃkāra (the ego-principle). This vocabulary underlies the Bhagavad Gītā and most later philosophy.
The paths of practice — the four yogas as concepts: karma-yoga, jñāna-yoga, bhakti-yoga, and rāja-yoga, together with sādhana (disciplined practice) and the qualities it requires: viveka (discrimination), vairāgya (dispassion), and brahmacharya (disciplined conduct).
The states of realisation — what liberation actually is: turīya (the fourth state beyond waking, dream, and sleep), kaivalya (the aloneness of pure consciousness in Yoga), sat-cit-ānanda (being-consciousness-bliss), and jīvanmukta (one liberated while still living).
The technical philosophy of language and causation — the precise tools of the darśanas: vivartavāda (apparent transformation), pariṇāmavāda (real transformation), sphoṭa (the burst of meaning from sound), and vāk (the philosophy of sacred speech).