Genre and place in the book. The tenth passage of Book II — the only place in Book II where Marcus cites a particular philosophical authority by name and makes an extended borrowing. The author cited is Theophrastus (c. 371–287 BCE), successor of Aristotle at the Lyceum; the work from which the fragment is taken has not survived, and this passage is one of our few sources of knowledge for Theophrastus' ethics (for biographical details see the card). By genre, 02-10 is an analytical passage, with an entry from ethics through the psychology of the passions: an analysis of the inner structure of a TERMfault by the type of the motivating passion.

Structure of the argument. Four movements.

1. Theophrastus' thesis. Offences born of TERMdesire are graver than offences born of TERManger (βαρύτερα … τὰ κατ' ἐπιθυμίαν πλημμελούμενα τῶν κατὰ θυμόν). This goes against ordinary intuition (the angry person "is not himself," and thereby, supposedly, outside responsibility), but the philosophical justification follows.
2. Anatomy of anger. The angry person "turns away from reason with a certain TERMpain and a hidden contraction (συστολῆς)" — that is, he acts out of pain, experiencing inner resistance to the act. Striking: συστολή is the precise Stoic definition of TERMλύπη in Chrysippus («ἄλογος συστολή», an irrational contraction of the pneuma). Συστολή is a technical characterisation of λύπη, not λύπη itself; they are distinct Greek words, and linking "contraction" to the lype card would be a confusion. Marcus here, by a hidden move, classifies anger as a species of λύπη, using its pneumatic definition as the key.
3. Anatomy of desire. The one who errs through desire is "overcome by TERMpleasure" (ὑφ' ἡδονῆς ἡττώμενος) — he acts out of pleasure, with inner assent to the act. The epithets are sharp: ἀκολαστότερος ("less self-controlled") and θηλύτερος ("more soft, effeminate"). Argumentatively: an offence "with pleasure" (μεθ' ἡδονῆς ἁμαρτανόμενον) is graver than one "with grief" (μετὰ λύπης).
4. Final criterion — the degree of voluntariness. "The angry person resembles rather someone forced (ἠναγκασμένῳ) into anger by the pain of a previously suffered injustice; the other has, from himself (αὐτόθεν), set himself in motion toward injustice." The Aristotelian distinction (EN III): ἑκούσιον (voluntary) vs. ἀκούσιον (involuntary). The voluntary offence is graver than the involuntary.

The principal concept — TERMἁμαρτία. Etymologically — a "miss," from archery: ἁμαρτάνω = "to fail to hit the mark." This makes the term technically paired with σκοπός from 02-07: σκοπός is the target of moral action, ἁμαρτία the miss past it. Where there is a target, there is the possibility of missing; ἁμαρτία is meaningless without a σκοπός. Passage 02-10 classifies misses by their motivating force: what pushed the archer off course — pain (λύπη) or the lure of pleasure (ἡδονή).

Stoic and Peripatetic frames. Theophrastus' dichotomy TERMθυμός / TERMἐπιθυμία is Platonic-Aristotelian: these are parallel categories, going back to the tripartite model of the soul in Resp. IV. In strict Stoic taxonomy the picture is different: θυμός is not an independent passion but a species of ὀργή, and ὀργή itself is a species of ἐπιθυμία (it is "the desire for retaliation"). From a strict Stoic standpoint, then, Theophrastus' opposition is entirely within a single genus. Marcus nevertheless adopts the Peripatetic division, because it gives diagnostic purchase: if all faults are species of ἐπιθυμία, there is no apparatus left for distinguishing "reactive" from "initiating" misses. And it is exactly this distinction that is needed for the ethical scale. The move is typical of Marcus: he keeps the Peripatetic tool wherever the Stoic systematisation would obscure the analysis.

Anatomy of πάθος through pneumatics. In the Stoic physiology of passions, each passion is a particular motion of the pneuma in the ruling part:

• TERMἡδονή — ἄλογος ἔπαρσις, an irrational expansion of the pneuma (as if the soul "swelled up");
• TERMλύπη — ἄλογος συστολή, an irrational contraction of the pneuma (as if the soul "shrank up");
• TERMἐπιθυμία — ἄλογος ὄρεξις, an irrational reaching of the pneuma toward the future;
• φόβος — ἄλογος ἔκκλισις, an irrational recoil of the pneuma from the future.

In a single sentence Marcus uses two of these definitions — λύπη through συστολήν, ἡδονή tacitly as the opposite expansion. For a hearer trained in Stoic pneumatics, the text carries a double message: a classification of faults and at the same time a demonstration of how the passions physically appear in the soul.

The disciplines. The principal one is assent: the passage analytically lays bare the structure of false assent (a passion as a false κρίσις about good / evil). The secondary is desire: the classification of ἐπιθυμία and its pathologies is the direct content of the discipline of desire, whose aim is to remove precisely these passions from the soul, replacing them with eupatheia-correlates (βούλησις, χαρά).

Stylistics. One of the most "scholarly" passages of Book II: a name cited, an embedded quotation, two technical terms of Stoic pneumatics (συστολή tacitly paired with ἔπαρσις), the Aristotelian dichotomy ἑκούσιον/ἀκούσιον. This is a rare register in the Meditations: usually Marcus speaks in the first person in self-summons; here, for a moment, he becomes the teacher of philosophy, setting out the traditional material.

Parallels. Theophrastus' work is cited only by Marcus (in our sources); on Theophrastus as a philosopher — Diogenes Laertius, book V (the relevant section; precise sub-sections to verify [verify:dl]). Aristotle on the passions and ἑκούσιον/ἀκούσιον — EN, books III and VII (especially on ἀκρασία, incontinence). The Stoic doctrine of the passions — SVF, vol. III (the main corpus; precise fragment range to verify [verify:svf]); Diogenes Laertius, book VII [verify:dl]; Stobaeus, Eclogae, book II [verify:wachsmuth]; Cic. Tusc., books III–IV; LS 65 (Long & Sedley). The theme recurs in Marcus: Med. 5.28 (the person who lives by TERMἐπιθυμία); 9.42 (analysis of θυμός); especially Med. 11.18 — the unfolded "therapy of anger" in nine points, a focused text on the management of θυμός. Seneca De ira — a whole treatise in the same therapeutic tradition.