Al-Ghazali: The Book of Knowledge. Book 1 of the Ihya ulum al-din. The Revival of The Religious Sciencestranslated from the Arabic with an Introduction and notes by Kenneth Honerkamp with a Foreword by Hamza Yusuf Hanson The Book of Knowledge is the foundation of the forty books of the Revival of the Religious Sciences, Imam al Ghazali's magnum opus. In the Book of Knowledge, he defines knowledge, its relation to faith, theology, and jurisprudence. The book deals with the virtue of knowledge from both rational and traditional points of view. It