Ars et Labor, 1906 vol. I (page 17 crop 3)

This detail shows the god Apollo seated and looking toward the heavens in a state of divine inspiration. He wears a laurel wreath and plays a Renaissance-era stringed instrument rather than a classical lyre, surrounded by the rocky terrain and laurel trees of his sacred mountain.

Apollo represents the Neoplatonic ideal of divine harmony and the 'furor divinus' (divine madness) described by Marsilio Ficino and Plato as the source of poetic and musical inspiration. As leader of the Muses, he embodies the mathematical and spiritual order of the cosmos, a central theme in the Renaissance integration of classical mythology with natural philosophy.