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.
On the syllable Oṃ and on breath: how to join them, what to do when tired, what hindrances occur. A practical book, with a precise count of stages and a warning that technique without character corrupts.