Sterling’s Counter to Long’s “Logical Basis of Stoic Ethics”

 

Sterling’s Counter to Long’s “Logical Basis of Stoic Ethics”

Theoretical foundations: Grant C. Sterling (Eastern Illinois University). Analysis and synthesis: Dave Kelly. Prose rendering: Claude (Anthropic). 2026.

---

The Argument Being Answered

A.A. Long, “The Logical Basis of Stoic Ethics,” Proceedings of the Aristotelian Society, Vol. 71 (1970/71), pp. 96–97, reconstructs Diogenes Laertius VII 85–88 as a valid derivation running from premises about Nature — that Nature creates living things and provides for their advantage (T), and that what accords with Nature is right (S) — through to the conclusion that man is obligated to obey Nature’s will by living according to sound reason. On its own terms the derivation is not circular. Sterling’s counter does not dispute Long’s scholarship. It disputes what the derivation is evidence of.

Full reconstruction: A.A. Long’s Reconstruction of the Diogenes Laertius Argument.

---

1. Scope Objection — Connected, Not Grounded

Sterling’s own words, from his 2017 ISF post distinguishing “support” from “connection”: the ethical beliefs of the ancient Stoics and their theological or physical beliefs were connected — each independently discovered and independently supported — not related as foundation to structure. His test case: had someone convinced Zeno that fiery pneuma was not in fact a material substance, Sterling does not think Zeno would have abandoned his belief that virtue is good.

Applied to Long’s reconstruction: the argument may accurately represent how Zeno, Cleanthes, and Chrysippus expounded their system. It does not follow that the ethical conclusion is logically dependent on the physical premises in the way a derivation implies. Two independently-held doctrines, connected in exposition, can look like a single chain of entailment without the ethics actually resting on the physics.

---

2. Direct Objection to Premise (S)

Sterling’s own words, from the same corpus record: “MORAL PROPERTIES CANNOT BE SENSED. That is the fulcrum.” His argument is that any number of premises describing what Nature is — empirical, sensory claims — cannot by addition cross into a claim about what is right, without a non-sensory moral premise doing the actual work.

This is precisely the function premise (S) — “that which accords with Nature is right” — performs in Long’s reconstruction. It is not derived from (T); it is asserted alongside it. On Sterling’s reading, Long’s article does not solve the is–ought problem for Stoic ethics; it locates the exact point at which the problem is being quietly assumed rather than argued.

---

3. The Alternative Bridge

Sterling rejects grounding ethics in a providential Nature or in the will of a lawgiving cosmos. In place of premises (T), (S), and (R), he substitutes the six commitments — ethical intuitionism (direct, non-inferential apprehension of moral truth) and moral realism (objective value independent of physics) doing the specific work premise (S) does in Long’s chain. The is–ought bridge is crossed by direct rational apprehension of moral fact, not by stipulating that a teleological Nature is normatively authoritative.

---

4. The Concession That Costs Nothing

Sterling can grant that Long has correctly reconstructed how the early Stoa reasoned, without conceding that the reasoning is what makes their ethics true or binding. Long’s paper is evidence of what Zeno, Cleanthes, and Chrysippus believed followed from what; it is not evidence that ethics must follow from physics for a modern Stoic. The historical connection was real; the logical necessity was never established — only asserted, at premise (S), where the argument needed it most.

---

Theoretical foundations: Grant C. Sterling (Eastern Illinois University). Analysis and synthesis: Dave Kelly. Prose rendering: Claude (Anthropic). 2026.