In 450 AD, the Athenian philosopher Proclus systematized Neoplatonism, creating a complex metaphysical framework that detailed the emanation of all reality from the One. His work synthesized earlier philosophical ideas and established a comprehensive understanding of existence, knowledge, and the divine. Proclus's contributions significantly influenced later philosophical thought, particularly in the realms of metaphysics and theology, shaping the intellectual landscape of the late antiquity and the Middle Ages.

Proclus's systematization of Neoplatonism influenced the hierarchical imagery found in medieval and Renaissance epic poetry. His ideas resonated in the works of poets like Dante and Spenser, who incorporated metaphysical themes into their literary explorations.