This book examines the studies of Aristotle's Poetics and its related texts in which three Medieval philosophers - Alfarabi, Avicenna and Averroes - proposed a conception of poetic validity (beauty), and a just relation between subjects in a community (goodness). The work considers the relation of the Poetics to other Aristotelian texts, the transmission of these works to the commentators' context, and the motivations driving the commentators' reception...