The Upanishadic enquiries & the quest for reality
Core idea: The turn from external Vedic ritual toward reflective inquiry raised a question that runs through later Indian philosophy: what is the underlying nature of reality (Brahman) and the self (Ātman)?
Upanishadic Epistemological Architecture (first millennium BCE)
The interiorization of Vedic ritualism and the triad of cognitive realization.
Key Turning Points
- Bṛhadāraṇyaka Upaniṣad — Yājñavalkya debates Gārgī in King Janaka's assembly; separately, he discusses immortality with his wife Maitreyī
- c. 7th–6th centuries BCE — Uddālaka Āruṇi instructs Śvetaketu on the nature of reality using the salt-in-water metaphor (Chāndogya Upaniṣad)
- c. 6th century BCE — The doctrine of rebirth, and of escape from the cycle of rebirth through liberating knowledge, emerges in the early prose Upanishads