What philosophical movement did Plotinus develop?

Plotinus developed the philosophical movement known as Neoplatonism, which emerged in the 3rd century AD as a significant interpretation of Plato's work. Neoplatonism expands on Plato's theories and emphasizes the importance of the One, or the Good, as the ultimate source of all reality. Through Neoplatonism, Plotinus sought to explain the nature of existence, the relationship between the material world and the divine, and the process of emanation, where everything flows from the One.

This philosophical system also integrates aspects of mysticism, proposing that individuals can achieve unity with the divine through intellectual and spiritual practices. Neoplatonism had a profound influence on later thinkers, both in the context of early Christian theology and during the Renaissance. Understanding this movement is crucial as it represents a bridge from ancient Greek philosophy to later philosophical and theological developments in the Western tradition.