Name and origin. In the sources he is usually named simply Maximus or Claudius Maximus; the full name is reconstructed fragmentarily (the praenomen is not preserved in reliable forms). In the Greek of Med. 1.15 — Μάξιμος; in Apuleius (Apologia) — Claudius Maximus. Belonging to the gens Claudia does not imply blood connection with the Julio-Claudians (as in the case of Cn. Claudius Severus — the nomen Claudius is widely distributed in the Antonine age and does not indicate dynastic kinship). The specific origo is not established; the general probabilistic profile is an Italian or western-provincial senatorial family.

Senatorial career: consulate and proconsulate.

• Suffect consul — approximately 142 or 144 CE. The precise dating is disputed; it is constrained by the consular fasti and by indirect evidence. Under Antoninus Pius — consistent with the general profile of an Antonine senator-philosopher.
• Proconsul Africae Proconsularis — the most prestigious senatorial provincial office; he held it, by the reconstruction from Apuleius, approximately in 158/159 (the year of Apuleius's trial, see below). The proconsulate of Africa is a position normally awarded to high-ranking consulars after a pause of 15–18 years from the consulate, which agrees well with a consulate of 142/144.

The trial of Apuleius and an extended contemporary testimony. The main non-Marcusian source on Maximus is Apuleius's own defence speech, known as the Apologia (or Pro se de magia — "For Himself, in Reply to the Charge of Magic"). Around 158/159, at Sabratha (a city in the province of Tripolitania, in Roman Africa), Apuleius stood trial on the charge of having used magic to seduce the wealthy widow Pudentilla and seize her property. Maximus presided over the trial as proconsul. Apuleius, having been acquitted, published an extended literary version of his defence — the Apologia — dedicated to Maximus.

In the Apologia Maximus is named many times. The characterisation given by Apuleius is independent of Marcus (Apuleius and Marcus probably did not know each other personally; their connection is through Maximus as the common philosophical environment of Antonine senatorialism). Apuleius emphasises:

• Maximus's learning: deep knowledge of philosophy (Apol. 41 and elsewhere), especially of Stoic doctrine.
• Justice and impartiality as a judicial norm (Apol. 1, 91).
• Seriousness and dignitas combined with openness to reasoning (Apol. 65).
• Maximus as a vir clarissimus — the formula of the highest senatorial rank, consistently applied by Apuleius.

This external characterisation converges with Marcus's internal portrait in Med. 1.15: seriousness + mildness, learning without arrogance, justice, openness of intention. The convergence of two independent testimonies is a rarity for Marcus's teachers (besides Maximus, only Apollonius has independent external testimony — in Lucian Demonax 31).

What does "presided over the trial" mean? A consular proconsul in an Antonine province carried out the judicial-administrative functions of the supreme instance: he heard cases of high rank (cognitio), including charges of magic (the lex Cornelia de sicariis et veneficiis in its Antonine interpretation). The trial of Apuleius is a model of such a cognitio: the proconsul sat on the tribunal, heard the accusers and the accused, pronounced the verdict. That Maximus acquitted Apuleius follows from the very fact of the posthumous publication of the Apologia: Apuleius lived to publish it.

Relations with Marcus. The chronology of the teaching relationship with Marcus is reconstructible in general outline:

• By the time of Marcus's adoption by Hadrian and Antoninus Pius in 138, Maximus was apparently already a mature senator (quaestorship — praetorship behind him), at the start of his consular path.
• His teaching — probably in the 140s (the period of Marcus's intensive philosophical formation), in parallel with Rusticus, Apollonius, and Sextus.
• After the proconsulate of Africa (158/159) Maximus returns to Rome in the 160s, where he may have remained in continuing contact with Marcus the Caesar and afterwards Marcus the emperor (by analogy with Rusticus, for whom continuing contact is attested by Dio Cassius).
• The precise date of his death is not established.

Educational role

The composite portrait in Med. 1.15. Marcus in Med. 1.15 gives Maximus one of the longest characterological portraits in Book I — third in length after Antoninus (1.16) and Rusticus (1.7). The paragraph unfolds in three clusters of ethical qualities:

(a) Self-mastery and emotional evenness (first paragraph): κρατεῖν ἑαυτοῦ (mastery of oneself), περίφορον εἶναι (being distractible) — negated; εὔθυμον (cheerfulness) — in ordinary adversities and in illness; εὔκρατον τοῦ ἤθους (a well-tempered character) with the additions μειλίχιον (mildness) and γεραρόν (dignity); οὐ σχετλίως κατεργαστικόν (carrying out tasks without complaint).

(b) Social transparency and emotional non-reactivity (second paragraph): πάντας αὐτῷ πιστεύειν (everyone trusted him); ἀθαύμαστον, ἀνέκπληκτον (he was amazed at nothing, astonished by nothing); a list of ~7 negative states that were foreign to him — μηδαμοῦ ἐπειγόμενον (never in a hurry), ὀκνοῦν (hesitating), ἀμηχανοῦν (perplexed), κατηφές (dejected), προσσεσηρός (with a forced grimace), θυμούμενον (angry), ὑφορώμενον (suspicious).

(c) Positive social qualities + integral wholeness (third paragraph): εὐεργετικόν, συγγνωμονικόν, ἀψευδές (beneficence, readiness to forgive, freedom from falsehood); the famous formula ἀδιαστρόφου μᾶλλον ἢ διορθουμένου φαντασίαν παρέχειν (he gave the impression rather of one undistorted than of one corrected); no one ever supposed himself despised by him, no one dared consider himself superior to him; εὐχαριεντίζεσθαι (graceful wit).

A unique formula: ἀδιαστρόφου vs διορθουμένου. The most philosophically charged phrase of 01-15. ἀδιάστροφος — "undistorted," that is, a person whose nature has not from the beginning deviated from the straight path of logos. διορθούμενος — "being straightened out," that is, a person who was distorted and is now consciously returning to the norm (through philosophical effort, through προκοπή). Marcus says that Maximus gave the impression of the first, not the second: his virtue looks like natural wholeness, not like the result of work on distortion. This is the highest Stoic evaluation: virtue that has ceased to look like an achievement and has become simply "a way of being." A contrast with the ordinary image of the Stoic προκόπτων (the one making progress) — in Maximus, as in Apollonius (the visible embodiment of ἀπάθεια), the Stoic ideal appears not as a programme but as an accomplished fact.

Structural place among the Stoic teachers. In Book I Marcus has four principal Stoic mentors (1.7 Rusticus, 1.8 Apollonius, 1.9 Sextus, 1.15 Maximus), and each transmits a specific mode of the Stoic ideal:

• Rusticus — the doctrinal (transmission of Epictetus's Discourses, accurate reading, slow assent);
• Apollonius — the existential (the visible embodiment of ἀπάθεια in pain and bereavement);
• Sextus — the ethical (the model of everyday measure and household discipline);
• Maximus — the scenic (how the Stoic "appears in action," what others read off him): the transparency of intentions + equal evenness in all situations.

Catulus (1.13) and Severus (1.14) supplement this row: Catulus — ethical granularity (friends / teachers / children), Severus — the political canon (the Stoic opposition). Maximus completes the portrait of the Stoic teacher as such — not by doctrinal transmission, not by an existential episode, but by scenically manifested integral virtue.

Connection with Med. 6.30. In Med. 6.30 Marcus returns to a similar portrait-construct, but now about Antoninus: μηδαμοῦ ἐπειγόμενον (in no way hurried) echoes Med. 1.15. This is not accidental: Maximus and Antoninus in Marcus's moral memory form a paired ideal of Stoic imperial virtue — Maximus as teacher, Antoninus as ruler. Med. 6.30 ("not to be Caesarised") draws indirectly on Maximus's portrait too, supplying the model of how not to be Caesarised. Structurally: 01-15 + 01-16 → Med. 6.30, on the same logic by which 01-11 + 01-14 → Med. 6.30 in the negative dimension (what to guard against).

• 01-15 — the principal, developed portrait of Maximus in the Meditations; the third longest in Book I (after 1.16 and 1.7).
• 01-17 — the thanksgiving to the gods; Maximus is implicitly among the "good teachers."
• 08-25 — a mention of Maximus's name in the roll-call of mortal pairs (Secunda buried Maximus, then she too): a formal reference, not a developed portrait.

• Apuleius, Apologia (= Pro se de magia) — the main contemporary non-Marcusian source on Maximus's character; standard text: Helm, Teubner. English translation: Hunink, Apuleius of Madauros: Pro se de magia (Brill, 1997).
• SHA Marcus (Vita Marci), ch. 3 — Maximus in the catalogue of Marcus's Stoic teachers.
• A. Birley, Marcus Aurelius: A Biography, rev. ed., Routledge, 2000, ch. 3 ("Education") — the reconstruction of Marcus's tutorial environment; for Maximus, also the mention of his connection with the trial of Apuleius.
• A. S. L. Farquharson, The Meditations of the Emperor Marcus Antoninus, Oxford 1944, vol. II, ad 1.15 — the detailed philological commentary, including on the rare vocabulary (προσσεσηρός, ἀδιάστροφος, εὐχαριεντίζεσθαι).
• R. Hard, Marcus Aurelius: Meditations, OWC, Oxford 2011, notes ad 1.15.
• P. Hadot, The Inner Citadel, tr. M. Chase, Harvard 1998 — the general reconstruction of the Stoic programme (consult the index for "Maximus").
• V. Hunink, Apuleius of Madauros: Pro se de magia, 2 vols., Brill, Leiden 1997 — the standard modern commentary on the Apologia, with the prosopographical treatment of Maximus.
• PIR² C 933 (for Claudius Maximus).