Book excerpt: Light upon Light: Essays in Islamic Thought and History in Honor of Gerhard Bowering brings together studies that explore the richness of Islamic intellectual life in the pre-modern period. Leading scholars around the world present nineteen studies that explore diverse areas of Islamic Studies, in honor of a renowned scholar and teacher: Professor Dr. Gerhard Bowering (Yale University). The volume includes contributions in four main areas: (1) Quran and Early Islam; (2) Sufism, Shiʿism, and Esotericism; (3) Philosophy; (4) Literature and Culture. These areas reflect the enormous breadth of Professor Bowering’s contributions to the field over a lifetime of scholarship, teaching, and mentoring. Contributors: Hussein Ali Abdulsater, Mushegh Asatryan, Shahzad Bashir, Jonathan Brockopp, Yousef Casewit, Jamal Elias, Janis Esots, Li Guo, Matthew Ingalls, Tariq Jaffer, Mareike Koertner, Joseph Lumbard, Matthew Melvin-Koushki, Mahan Mirza, Bilal Orfali, Gabriel Reynolds, Nada Saab, Amina Steinfels & Alexander Treiger.