The Diagram as Paradigm is the first book that looks at medieval diagrams in a cross-cultural perspective, focusing on three regions—Byzantium, the Islamicate world, and the Latin West—each culturally diverse and each closely linked to the others through complex processes of intellectual, artistic, diplomatic, and mercantile exchange.

The volume unites case studies, often of little-known material, by an international set of specialists, and is prefaced by four introductory essays that provide broad overviews of diagrammatic traditions in these regions in addition to considering the theoretical dimensions of diagramming. Among the historical disciplines whose use of diagrams is explored are philosophy, theology, mysticism, music, medicine, mathematics, astronomy, and cosmology. Despite the sheer variety, ingenuity, and visual inventiveness of diagrams from the premodern world, in conception and practical use they often share many similarities, both in construction and application. Diagrams prove to be an essential part of the fabric of premodern intellectual, scientific, religious, artistic, and artisanal life.

From antiquity to the modern age, legal, documentary, exegetical, literary, and linguistic traditions have viewed the relationship between image and letter in diverse ways. There is a long history of scholarship examining this relationship, probing the manner and meaning of its dynamics in terms of equivalency, complementarity, and polarity.

This volume addresses the pictorial dimension of writing systems from cross-cultural and multidisciplinary perspectives. Historians—including specialists in art and literature—paleographers, and anthropologists consider imagistic scripts of the ancient and medieval Near East, Europe, Byzantium, and Latin America, and within Jewish, polytheistic, Christian, and Muslim cultures. They engage with pictographic, ideographic, and logographic writing systems, as well as with alphabetic scripts, examining diverse examples of cross-pollination between language and art.