# Aristotle's division of being into substance, quantity, relation, and quality

**Artwork**:   
**Artist**: Arnaud Quercy  
**Asset**: IDS-RNI0315  
**Serial**: NAN-RDG000268

This is a scholarly encyclopedia survey of Aristotle's logical/ontological theory of categories (substance, quantity, relation, quality, said-of/present-in, predication, and the scholarly debate over how the list was generated) — a technical treatise on classification of being, not on creation, emission, transmission across modalities, or reception, so the ideamorphism apparatus (codex, diffraction, ouverture, invariant) has no vocabulary that engages its claims; the shared word 'form' is a homonym across two unrelated technical traditions, not a point of contact.

## Context

### Declined — `no-purchase` [@source]

### Propositional grid [@p31]

> **Read this grid.** “Not evaluated” does **not** mean the source has nothing to say about that proposition. It means **the reading did not instruct it**. That is not a result, and it counts in no denominator. A silence, by contrast, is a finding: the reading touched the proposition without concluding, or noted its absence itself.

**Not evaluated (37)** — P1, P2, P3, P3a, P4, P5, P6, P7, P8, P9, P10, P11, P12, P13, P14, P14a, P14b, P15, P16, P16a, P17, P18, P18a, P19, P19a, P20, P21, P22, P23, P24, P25, P26, P27, P28, P29, P30, P31

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*Overall verdict: **DECLINED:no-purchase** — taxonomy of the August 2026 pass, predating the move to relational verdicts. Kept as metadata: the gap between the two forms is data, not residue. This reading’s judgement is in the grid above.*

Reading of 2026-10-08 · model `claude-sonnet-5` · source 94,337 chars · 1 attempt(s)