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Nicene and Post-Nicene Fathers, Vol. III: Doctrinal Treat...

Holy TrinityNicene and Post-Nicene FathersSt. Augustine

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This is a passage from Augustine's *De Trinitate* (On the Trinity), a theological-philosophical treatise in the tradition of Christian Neoplatonism. The chapter argues that the soul degenerates when it clings to sensory experience for its own sake rather than directing it toward a higher end, but its main focus is anatomizing how the mind forms inner mental images (conceptions) after external perception has ended. Augustine identifies a trinity of inner faculties that mirrors external perception: memory (which retains the perceived form after the object is gone), internal vision (the mind's "eye" being formed by what memory holds), and will (which directs the mind's eye toward the memory, just as it once directed the bodily sense toward the physical object). A notably distinctive move is his careful insistence that these three inner elements, though forming a unified conception, are genuinely distinct — a point he argues can only be discerned by reason, since the memory-trace and the vision formed from it appear seamlessly one. This analysis of inner mental life serves Augustine's larger project of finding in the human mind an analogy for the divine Trinity, grounding abstract theology in a fine-grained psychology of perception, memory, and attention.

Nicene and Post-Nicene Fathers, Vol. III: Doctrinal Treat...

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