Carl Ernst, who really needs no introduction for scholars of Islam or South Asia, is the William R. Kenan, Jr. Distinguished Professor of Religious Studies at the University of North Carolina, Chapel Hill and a long time investigator of Muslim encounters with Indic learned traditions, particularly yoga. His publications on the subject include seminal articles such as "Situating Sufism and Yoga" (JRAS, ser. 3 15, no. 1 ) and "Muslim Studies of Hinduism" (Iranian Studies 36, no. 2 ), made available on Dr. Ernst's website.
Today's talk "An Illustrated Anglo-Persian Taxonomy of Indian Religions: The Silsila-i Jogiyan (Chain of Yogis) of Sital Singh Bikhwud" was an Annemarie Schimmel Memorial Lecture at the Metropolitan Museum of Art, a series featured before on this blog. Luckily for us, the MET has kindly made the lecture available here and embedded below.