During his lifetime, Imam al-Ghazāli identified the principle cause of the crisis facing the Muslim world as the crisis of knowledge. In his magnum opus, the Revivification of the Religious Sciences, Imam al Ghazāli opens with the Book of Knowledge (Kitāb al-'Ilm). He explains to the seeker the different types of knowledge, the priority of learning the sacred sciences, and the roles and responsibilities of the teacher and student.
World renowned scholar Hamza Yusuf provides an enlightening commentary on Al-Ghazali's work, providing keen insight and well-reasoned analysis.