印度哲学
Rao relocated to the United States and was Professor of Philosophy at the University of Texas at Austin from 1966 to 1986, when he retired as Emeritus Professor. Courses he taught included "Marxism to Gandhism, Mahayana Buddhism, Indian philosophy: The Upanishads, Indian philosophy: The Metaphysical Basis of the Male and Female Principle, and Razor's Edge".