Bernardus Silvestris exemplifies the scholastic culture of his time. Having studied with pioneers in philosophy and science, he became a renowned teacher of literary and poetic composition. His versatility as scholar, philosopher, and scientist is apparent in his masterpiece, the Cosmographia. In alternating verse and prose, this foundational text for later Latin and vernacular literature synthesizes important intellectual movements of the early twelfth century. It owes its deepest debt to the tradition of philosophical allegory, including Plato's Timaeus, Cicero's Somnium...