claims#plato-moral-psychology-intellectualism-to-partition

Plato's moral psychology develops from the Protagoras's intellectualist denial of akrasia, through the Gorgias's ordered soul (the middle term), to the Republic IV partition

ID: plato-moral-psychology-intellectualism-to-partition Title: Plato's moral psychology develops from the Protagoras's intellectualist denial of akrasia, through the Gorgias's ordered soul (the middle term), to the Republic IV partition Status: live Confidence: medium Claim type: genealogical / corrective Created: 2026-06-21 Updated: 2026-06-23 Sources: plato-protagoras, plato-gorgias, plato-republic, plato-laws Wiki homes: socratic-intellectualism, tripartite-soul, plato-gorgias, punishment-as-cure

Claim

Plato's moral psychology develops across three dialogues. The Protagoras denies akrasia outright — all vice is ignorance, there is no irrational desire (socratic-intellectualism). The Gorgias already presupposes an ordered, appetite-bearing soul — the leaky-jar and kosmos/taxis arguments require appetites that can be ordered against reason — re-admitting the irrational desire intellectualism denied. The Republic IV then partitions the soul (the principle of opposition; Leontius), making akrasia the very evidence for tripartition. The Gorgias is the middle term.

Evidence

  • plato-protagoras — "no one errs willingly"; akrasia dissolved into miscalculation (352b–358d). Extraction-anchored (.extraction-plato-protagoras.md).
  • plato-gorgias — the leaky-jar (493b) and the kosmos/taxis ordered-soul argument (503d–508a); J.M.C. notes its Republic-IV-like "irrational desires." Extraction-anchored (.extraction-plato-gorgias.md).
  • plato-republic — the principle of opposition and tripartition (435a–441c); the page's existing tripartite-soul source.
  • plato-laws — the arc's late endpoint: Book IX retains "all wicked men are unwillingly wicked" (860d) yet supplements it with anger and pleasure as independent, non-cognitive sources of wrongdoing (863a–b). Extraction-anchored (.extraction-plato-laws.md); see punishment-as-cure.

Counterpressure / Limits

  • Cooper's anti-developmentalism: the difference may be one of dramatic context or argumentative purpose, not a psychology that changed over time.
  • Intellectualism may survive the partition (the philosopher-ruler's virtue is still knowledge of the Good), so "supersession" overstates a relationship that might be layering — and the Laws IX evidence supports the layering reading: Plato keeps the "no one errs willingly" slogan while adding non-cognitive sources, i.e. supplements rather than abandons. The title's "to partition" may therefore overstate a terminus the Laws declines to make clean.

Payoff

Gives the Gorgias a precise place it otherwise lacks — the hinge where irrational desire re-enters Plato's psychology — and reads three pages (socratic-intellectualism, plato-gorgias, tripartite-soul) as one developmental arc rather than three positions.

Status History

  • 2026-06-21 — created at candidate (ingest Wave 3). Contestable (development vs dramatic-context; supersession vs layering); three extraction/source anchors; J.M.C. flags the middle-term reading.
  • 2026-06-22 — Updated (ingest Wave 4): added the Laws IX as the arc's late endpoint (intellectualism supplemented, not abandoned: anger + pleasure as independent sources, 863a–b); added punishment-as-cure as a Wiki home. The new evidence tilts toward the "layering" reading already flagged in counterpressure.
  • 2026-06-23 — promoted candidate→live in audit v1.9 Phase 8: cleared the 3-test gate with ≥2 anchored evidence bullets from ≥2 distinct dialogue sources (independently reviewer-verified against extraction notes); maintainer-authorized cap-exceed for the Plato cohort.

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