The Upaniṣads — the philosophical core of the Vedic tradition, revealing the nature of Brahman, the Ātman, knowledge, action and liberation. The ten principal Upaniṣads together with select minor Vaiṣṇava Upaniṣads.
1Chapter 1 — Авадхута-упанишада36 versesDattātreya answers the question of who the avadhūta is — "the one who has shaken off everything": no marks, no rules, no concern for what others think. The book is short and sharp, of the kind easily misread.