The Arabic language has a rich history of literary criticism and theory, starting from the 8th century ce up to the 21st century. This literary criticism and theory engages with a poetic tradition that dates back to pre-Islamic times. The inquiry into literary quality was motivated by an interest in evaluating poetry, a general concern with eloquent speech, whether in verse or prose, and by the desire to articulate the beauty of the Quran. The transmission of Aristotle’s Poetics into Arabic also spurred interest in the poetic, particularly in Arabic philosophy. The study of eloquence crystallized into a standardized science by the 13th century ce, with branches focusing on (1) the role of syntax in literary beauty (the science of meanings); (2) simile, metaphor, and metonymy (the science of elucidation); and (3) rhetorical figures (the science of rhetorical figures). The aesthetic developed in the early criticism of the 9th and 10th centuries was concerned with articulating the merits of an idealized classical style of pre-Islamic poetry, from which the “modern” poets of the early Abbasid period diverged. This classically oriented aesthetic was dominated by a concern with the truthfulness and naturalness of poetry, typical of the style of the “ancients,” on the one hand, and the limits of unrealistic imagery and affected artificiality, which characterized the more ornate modern Abbasid style, on the other. This binary outlook shifted after the 10th century, however, to an aesthetic of wonder. A theory of aesthetic experience began to develop, therefore, which was based on the ability of poetic language to evoke wonder in the recipient. As a result, wonder-enhancing characteristics such as strangeness, the unexpected, and the rare became essential components of aesthetic judgment. Moreover, the ability of language to make meaning manifest in ways that allow for an experience of discovery and hence wonder, became the foundation of aesthetic inquiry in post-10th century Arabic literary theory.