The Separation of Ground and Mind

The chain of explanation may terminate. Why must it terminate in a mind? Demanding that the final cause of motion be coloured would be an obvious mistake; the terminus of a causal chain needs no chromatic properties. This chapter argues that demanding the terminus be intelligent has the same logical structure. The prime mover tradition, from Aristotle through Aquinas to Leibniz, fuses two demands that are logically separable: an explanatory ground, where the hierarchy of reasons is structurally complete, and an intelligent agent, a being that knows, wills, and intends. At the absolutely simple terminus the two cannot be satisfied together, because knowing, willing, and intending each require internal distinctions, and the terminus has none. The tradition's most sophisticated instrument for holding the conjunction together is the doctrine of divine simplicity: God is identical with his nature, and his attributes are identical with one another and with him. The chapter's reply, the intra-attribute constraint, is the paper's sharpest contribution. The identity thesis collapses the distinctions between attributes, merging knowledge with power with goodness, yet it leaves untouched the distinctions within any single attribute that make it the attribute it is. Knowing that P still differs from failing to know that P; a will directed at one object still excludes its being directed elsewhere. Those internal distinctions are what no simplicity doctrine can afford, and no identity of attributes with each other reaches them. The chapter runs the argument through the three foundational figures, locating a structurally distinct failure point in each: Aristotle's self-thinking mover, Aquinas's identity thesis, Leibniz's inference from necessary being to intelligent being. Six contemporary defence strategies follow, including Neo-Thomist identity theories and truthmaker simplicity, and the same obstacle appears in all of them. The most coherent escape available to the theist, the chapter concludes, is the Eastern Orthodox distinction between God's essence and God's energies, a move that implicitly concedes the chapter's point: being and intelligence come apart at the deepest level. The result is deliberately ecumenical in one respect. It is compatible with the demand for an explanatory ground and with arguments that a terminus exists; what it denies is only that the ground must be a mind. This paper is Chapter 10 of Dyology: On Diversity and Equality; by the book's own closing audit, the separation argued here is among its most exportable results.