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.
"The Secret of Sarasvatī": a hymn to the goddess of speech and an examination of what holds every word together. Toward the end it turns to the dispute over non-duality, and we examine it on the merits.