How did medieval Christian thinkers relate beauty in art to God?

Medieval Christian thinkers generally approached the relationship between beauty in art and God through two primary philosophical lenses: Neoplatonism and Scholasticism.

Neoplatonic Influence

Many medieval thinkers viewed beauty as a reflection of divine order, conforming to mathematical laws of number and harmony. In this tradition, the beauty found in art—such as music, poetry, or architecture—was seen as a manifestation of a cosmic order established by God. By experiencing this beauty, individuals were thought to be resonating with that same divine order within themselves. St. Augustine was a key figure in this tradition, emphasizing that the beauty of a work of art is a reflection, however pale, of the transcendence and sublimity of absolute, divine beauty.12

Scholasticism and St. Thomas Aquinas

St. Thomas Aquinas provided a systematic approach within his Scholastic framework. He defined beauty as that which pleases upon contemplation and identified three prerequisites: perfection, appropriate proportion, and clarity. Aquinas argued that beauty is admirable because it stimulates theoretical thinking. Furthermore, he viewed religious art as serving specific functions in relation to God:12
* Instruction: Serving as a "Bible for the laity" to educate the uneducated.3
* Incarnation: Illustrating and helping the faithful remember the mystery of the incarnation.3
* Devotion: Awakening the passion of devotion, which is often kindled more effectively through visual contemplation than through hearing.3

Ultimately, medieval thinkers distinguished between the judgment of the senses and the judgment of reason, with the latter being superior because it was grounded in laws of beauty ordained by God.2