This book examines Aquinas's aesthetic thought and view of art within the broader context of medieval aesthetics and the history of aesthetic development, emphasizing its profound influence on later aesthetics. The book not only elaborates on Aquinas's efforts to establish coherence between faith and reason, the transcendent and empirical, as well as its significance, but also discusses the main contents and characteristics of Aquinas's aesthetic thought from the three aspects of the ontology of beauty, the theory of form, and the theory of experience. By examining Aquinas's aesthetic thought and view of art in relation to modern aesthetics and twentieth-century aesthetics, this book reveals the immense vitality of Aquinas's aesthetic thought.