The Imperial Court at Milan and the Meeting of Two Rhetoricians
In autumn 384, Augustine of Hippo arrived in Mediolanum (modern Milan), then the administrative capital of the Western Roman Empire. Appointed as the imperial professor of rhetoric through the patronage of the pagan prefect Quintus Aurelius Symmachus, Augustine sought career advancement and public recognition. His official duties required delivering formal panegyrics before the young emperor Valentinian II and the imperial court. In the same city resided Saint Ambrose, who had governed the Milanese diocese since December 374 following a distinguished career as consular governor of Liguria and Emilia.
Augustine approached the bishop initially not as a spiritual guide, but as a renowned master of Latin eloquence. Disillusioned with the Manichaean sect he had frequented for nearly a decade and disappointed by the shallow philosophical answers of their leader Faustus of Milevis, Augustine observed Ambrose's public preaching from the perspective of a critical rhetorician. Ambrose received the young North African rhetorician cordially, embodying a dignified paternal authority that Augustine recorded with enduring gratitude in his autobiographical reflections.
The Milanese Context and the Episcopal Trajectory of Ambrose
The man Augustine encountered had undergone an abrupt transition from high civil administration to pastoral governance. Born around 339 or 340 in Augusta Treverorum (Trier) into an illustrious Roman senatorial family, Ambrose was trained in Rome in rhetoric and jurisprudence. Following the death of the Arian bishop Auxentius in late 374, Ambrose entered the cathedral basilica in his capacity as civil governor to maintain public order during a contentious episcopal election. The assembly unexpectedly acclaimed him as bishop, prompting his rapid baptism on 30 November and consecration on 7 December 374.
Upon his elevation, Ambrose distributed his wealth to the poor, donated his family estates to the Church, and embarked on an intensive study of theology under the priest Simplicianus. Lacking formal patristic training, he immersed himself in the Greek Christian thinkers of the East, translating their methods directly into Latin pastoral practice. By the time Augustine sat among his congregation a decade later, Saint Ambrose had consolidated his authority through theological disputes, municipal charity, and extensive liturgical organisation.
Allegorical Exegesis and the Overcoming of Manichaean Literalism
The primary barrier preventing Augustine from embracing the Catholic faith was the Old Testament, which Manichaean polemicists dismissed as crude, contradictory, and unworthy of a spiritual deity. Augustine had long struggled with anthropomorphic descriptions of God. Saint Ambrose resolved this fundamental intellectual obstacle by introducing the Latin West to the allegorical and typological exegesis developed by Philo of Alexandria and perfected by Origen.
Preaching regularly on texts from Genesis, the Psalms, and the patriarchs, Ambrose frequently cited the Pauline maxim from the Second Epistle to the Corinthians: "The letter killeth, but the spirit giveth life." Through this hermeneutical key, historical narratives that had scandalised Augustine were unveiled as profound prefigurations of Christ and spiritual realities. As noted in historical surveys available through the Treccani biographical archives, this scriptural method allowed Augustine to reconcile the biblical text with philosophical rigor, clearing the path toward his acceptance of Catholic orthodoxy.
Neoplatonic Philosophy and the Immateriality of the Divine
Ambrose's sermons did not merely apply allegorical tools; they were saturated with the vocabulary and concepts of Plotinus and Porphyry. Ambrose operated within a circle of Milanese intellectuals—including Simplicianus and the magistrate Mallius Theodorus—who read Plotinian treatises translated into Latin by Marius Victorinus. Through Ambrose's homilies, Augustine first grasped the philosophical concept of God as an incorporeal, immutable, and purely spiritual substance.
For years, Augustine had been unable to conceive of substance except in material or spatial terms, imagining evil as a physical darkness encroaching upon the light. Ambrose's assimilation of Neoplatonic metaphysics provided Augustine with the framework to understand evil not as a positive substance, but as a privation of the good (privatio boni). This conceptual breakthrough dismantled the dualistic cosmology of Manichaeism and provided a metaphysical architecture that Augustine would develop throughout his subsequent theological career.
The Practice of Silent Reading and Contemplative Lectio Divina
In the sixth book of his Confessions, Augustine recorded a celebrated observation regarding Ambrose's personal study habits. Visiting the bishop's private quarters without an appointment, Augustine frequently found Ambrose reading in absolute silence, his eyes scanning the page and his heart exploring the meaning, while his voice and tongue remained still. In late antiquity, texts were almost universally read aloud, even in solitude.
This silent reading was not merely a physical habit; it reflected the disciplined practice of lectio divina, wherein the biblical text was meditated upon internally as a direct spiritual colloquy. Papal teachings published by the Libreria Editrice Vaticana emphasize how Ambrose integrated this continuous interior assimilation of Scripture into his daily pastoral life, serving as an influential model of intellectual interiority for the inquisitive Augustine.
Liturgical Resistance and the Milanese Hymnody of 385–386
During the Lent of 385 and the spring of 386, Augustine witnessed Saint Ambrose confront the imperial court directly during the crisis of the basilicas. The empress regent Justina, supporting the Homoean (Arian) court faction, demanded the surrender of a basilica outside the walls (the Portiana) and subsequently the new cathedral within the city for Arian worship. Ambrose adamantly refused, declaring that sacred buildings dedicated to God were not subject to imperial authority.
When imperial troops surrounded the occupied basilica, Ambrose sustained the besieged congregation by introducing antiphonal psalmody and teaching them metric hymns composed in four-line stanzas of iambic dimeters. Authentic hymns such as Aeterne rerum conditor and Deus creator omnium resonated throughout the basilica. Augustine, whose mother Monica was present and praying fervently within the congregation, was deeply moved by this corporate liturgical resistance. The power of congregational singing left an indelible mark on his understanding of liturgical beauty and communal identity.
The Discovery of the Relics of Gervasius and Protasius
In June 386, at the height of the ecclesiastical tension with the imperial court, Ambrose oversaw the excavation and translation of the remains of the martyrs Gervasius and Protasius beneath the pavement of the Basilica of Saints Nabor and Felix to the newly constructed Basilica Martyrum (now the Basilica di Sant'Ambrogio). The solemn translation, accompanied by reported miraculous healings including that of the blind butcher Severus, generated overwhelming public support for the Nicene bishop.
Augustine was an eyewitness to these events in Milan. In his later writings, including the City of God, Augustine repeatedly referenced the discovery of these martyrs to substantiate the reality of miracles in the post-apostolic era. Ambrose demonstrated how the veneration of local martyrs could simultaneously consolidate orthodox Christian identity, foster public unity, and delineate the boundary between ecclesiastical authority and civil imperial power.
The Easter Vigil of 387 and Mystagogical Initiation
Following his intellectual and moral crisis in a Milanese garden in August 386, Augustine formally resigned his professorship of rhetoric and retreated to the country estate of Cassiciacum with his son Adeodatus, his mother Monica, and his friend Alypius. Returning to Milan at the beginning of Lent 387, Augustine enrolled among the competentes—the catechumens preparing for immediate baptism.
During the Easter Vigil on the night of 24–25 April 387, Saint Ambrose solemnly baptised Augustine, Adeodatus, and Alypius in the baptistery of the Milanese cathedral. In subsequent mystagogical treatises such as De sacramentis and De mysteriis, Ambrose outlined the transformative theology of Christian initiation, explaining the rites of baptism, the post-baptismal anointing, and the reception of the Eucharist. Later medieval legends posited that Ambrose and Augustine spontaneously composed the hymn Te Deum laudamus during this ceremony; however, modern philological scholarship has discarded this attribution, assigning the hymn to broader Latin traditions or to Nicetas of Remesiana.
Civic Ethics and the Balance of Church and Empire
Ambrose provided Augustine with an uncompromising model of Christian civic ethics and the relationship between religious authority and the state. In his work De officiis ministrorum, Ambrose restructured classical Ciceronian ethics around the four cardinal virtues, subordinating political utility to divine law and eternal life. In his political interactions, Ambrose consistently asserted that the emperor was within the Church, not above it ("Imperator enim intra Ecclesiam, non supra Ecclesiam est").
This principle became manifest in historical episodes witnessed by the Milanese public: Ambrose successfully opposed Symmachus's petition to restore the pagan Altar of Victory in the Roman Senate in 384, and in 390 he addressed a private epistolary rebuke (Letter 51) to Emperor Theodosius I following the massacre of several thousand citizens at Thessalonica. Ambrose suspended the emperor from communion until Theodosius completed public penance. These historical applications of pastoral accountability profoundly shaped Augustine's later theological framework in De civitate Dei, where secular authority remains strictly provisional before the eternal City of God.
Doctrinal Divergences and Epistolary Relations
Despite their intimate connection in Milan, the relationship between Ambrose and Augustine in later years was defined primarily by reverent intellectual debt rather than constant correspondence. After his baptism, Augustine departed for North Africa, eventually being ordained priest and bishop of Hippo Regius. Augustine frequently quoted Ambrose as a normative authority on original sin, grace, and the sacraments in his polemics against the Pelagians and Donatists.
Nevertheless, distinct differences marked their theological trajectories. Ambrose remained fundamentally a Roman magistrate turned pastor, focused on liturgical execution, moral paranesis, and allegorical homilies grounded in Greek patristic models. Augustine developed a far more speculative, introspective, and systematic approach to grace, free will, and predestination. While Ambrose provided the essential seedbed for Augustine's theological awakening, Augustine's later syntheses established an independent doctrinal trajectory that expanded beyond the fourth-century Milanese milieu.
Sources and further reading
- Benedict XVI. General Audience of 24 October 2007: Sant'Ambrogio di Milano. Libreria Editrice Vaticana. Comprehensive papal treatment of Ambrose's exegetical method, pastoral care, and spiritual guidance of Augustine.
- Enciclopedia Treccani. Biographical and critical analysis in AMBROGIO, santo (Enciclopedia Italiana, 1929). Historical reconstruction of Ambrose's episcopal election, anti-Arian struggles, and fourth-century theological works.
- Enciclopedia Treccani. Overview entry: Ambrògio, santo. Istituto della Enciclopedia Italiana. Detailed documentation of the Altar of Victory dispute, relations with Theodosius I, and civic impact.
- Nauroy, Gérard, et al. Ambroise de Milan. XVIe centenaire de son élection épiscopale. Institut d'Études Augustiniennes / Brepols Publishers. Scholarly essays examining fourth-century Milanese chronology, episcopal authority, and patristic philology.
- Loughlin, James F. "St. Ambrose." The Catholic Encyclopedia, Robert Appleton Company. Critical documentary overview of Ambrose's life, authentic writings, and patristic legacy.
Frequently Asked Questions
How did Saint Ambrose help Augustine overcome his difficulties with the Old Testament?
Saint Ambrose introduced Augustine to the allegorical exegesis of Origen and the Alexandrian school. By interpreting biblical narratives typologically rather than through strict literalism, Ambrose showed Augustine that difficult Old Testament passages contained spiritual and moral truths, dismantling the intellectual objections raised by the Manichaeans.
When and where did Saint Ambrose baptise Saint Augustine?
Saint Ambrose baptised Augustine during the Easter Vigil on the night of 24–25 April 387 in the cathedral baptistery of Milan. Augustine was baptised alongside his natural son Adeodatus and his close friend Alypius following an intensive period of Lenten preparation.
Did Saint Ambrose and Augustine compose the Te Deum together?
No. Although medieval hagiographical tradition claimed that Ambrose and Augustine composed and recited the Te Deum spontaneously at Augustine's baptism in 387, modern historical and philological scholarship has rejected this legend, attributing the hymn to anonymous Western liturgical traditions or to Bishop Nicetas of Remesiana.
What impact did Ambrose's silent reading have on Augustine?
Augustine found Ambrose's habit of reading without vocalising striking, as public or audible reading was the universal custom in late antiquity. Ambrose's practice reflected interior meditation and lectio divina, demonstrating to Augustine a contemplative approach to sacred Scripture centred on internal reflection rather than rhetorical performance.
How did the 385–386 Basilica Crisis influence Augustine?
During the imperial siege of the Milanese basilicas, Augustine witnessed Ambrose sustain the congregation through the introduction of antiphonal psalmody and original metrical hymns. This display of liturgical unity and pastoral resistance against Homoean imperial pressure deeply affected Augustine's appreciation for congregational worship.
What was the nature of the confrontation between Saint Ambrose and Emperor Theodosius I?
Following the massacre of civilians in Thessalonica in 390, Saint Ambrose sent a private letter (Letter 51) to Emperor Theodosius I demanding public penance and refusing to celebrate the Eucharist in his presence until he complied, establishing the canonical principle that secular rulers remain subject to divine law.