Theoria versus Poesis : Neoplatonism and Trinitarian Difference in Aquinas, John Milbank, Jean‐Luc Marion and John Zizioulas[Note 1. This essay was originally delivered as a lecture for ...]

The totality with which postmodern Christian theology asserts its right to proceed independently of philosophy is, in fact, philosophically situated and determined. Heidegger, primarily, defines theology's project by his narration of Western Fate in terms of onto‐theology. Two trinitarian differences are required of theologians who understand theology's situation thus: the first, associated with the procession of the Logos , requires getting beyond philosophy; the second, associated with the Spirit, requires getting beyond theology to poesis . Following Heidegger transforms theology into poesis and praxis . Beginning from a criticism of Aquinas implicit in a contrast made by Milbank between true trinitarian differential ontology and that possible from within Aristotelian categories like potency, act and actus purus , the paper considers what response might be made on behalf of medieval western philosophical theology and its development of trinitarian difference within theoria . The argument is that its union of Neoplatonic negative theology and metaphysics does not escape being onto‐theology but does provide genuine trinitarian difference.