• P. Olivelle (trans.), Upaniṣads (Oxford: 1996).

• B. Black, The Character of the Self in Ancient India: Priests, Kings, and Women in the early Upaniṣads (Albany: 2007).

• B. Black, “The Rhetoric of Secrecy in the Upaniṣads,” in S.E. Lindquist (ed.), Religion and Identity in South Asia and Beyond (Florence: 2011), 101-25.

• J. Ganeri, The Concealed Art of the Soul: Theories of Self and Practices of Truth in Indian Ethics and Epistemology (Oxford: 2007). [Note: the script for this episode is based partially on the discussion of the Upaniṣads in this book.]

• J. Frazier, “Natural Theology in Eastern Religions,” in R. Manning (ed.), The Oxford Handbook of Natural Theology (Oxford: 2013), 166-81.

• D. C. Mathur, “The Concept of Self in the Upanishads: An Alternative Interpretation,” Philosophy and Phenomenological Research 32 (1972), 390-6.

• M. Kapstein, “Indra’s Search for the Self and the Beginnings of Philosophical Perplexity in India,” in M. Kapstein, Reason’s Traces (Somerville: 2001), ch. 2.