The Four Words Plotinus Took From Plato's Sun

Plotinus did not invent the claim that the highest principle lies beyond being, he lifted the phrase from a specific line in Plato's Republic and built a metaphysics on top of it. In the Republic's account of the sun as an image for the Good, Plato says the Good is not being but is beyond being, exceeding it in age and power, four words offered almost in passing to close an analogy about sight and light. Plotinus quotes the phrase directly and repeatedly across the Enneads and treats it as though Plato had stated a doctrine rather than reached for a striking image, converting an aside about the sun into the founding claim of his own system, that the One which grounds all being cannot itself be a being without collapsing back into what it grounds. Hadot's study traces how much weight later tradition hung on those four words once Plotinus had fixed them as technical vocabulary rather than metaphor, Proclus, Damascius and eventually Christian, Jewish and Islamic writers working centuries after Plato inheriting a phrase meant to describe a sun's relationship to sight and using it to describe God's relationship to existence itself. The borrowing is direct enough to trace and consequential enough that negative theology across three religious traditions can be read as a very long commentary on one sentence from a dialogue about justice.