ERNST Words of Ecstasy in Sufism - Free ebook download as PDF File (.pdf), Text File (.txt) or read book online for free. Carl W. Ernst is a specialist in Islamic studies, with a focus on West and South Asia. His published research, based on the study of Arabic, Persian, and Urdu, has been mainly devoted to the study of Islam and Sufism. His book Following Muhammad: Rethinking Islam in the.