Abu Hamid al-Ghazali (d. 1111) was a leading scholar, jurist, and theologian of the golden age of Islam, and he remains its truest advocate in modern times. As a teacher of both inward and outward faith, he recorded these practical teachings in his forty-book compendium of Islamic knowledge. Matthew Ingalls is Associate Professor of Middle Eastern Studies and Chair of the Department of International and Middle Eastern Studies at the American University in Dubai. He received his doctorate in 2011 from Yale University's Department of Religious Studies and completed a master's degree in Arabic Studies at the American University in Cairo prior to this. Before joining the AUD faculty in the fall of 2016, Matthew taught Islamic Studies and Religious Studies at the University of Puget Sound in Tacoma, Washington, USA. He has published articles in the study of Sufism and Islamic law during the later Islamic Middle Period (1250-1500), while his current research examines pre-modern Muslim commentary works and their role in intellectual change. His academic monograph The Anonymity of a Commentator: Zakariyya al-An?ari and the Rhetoric of Muslim Commentaries was published by the State University of New York Press in September of 2021.