Numerus interior e itinerarium animae. De musica come antropologia teologica dell’interiorità in Sant’Agostino
This article proposes a theological re-reading of Augustine’s De musica, arguing that it should not be interpreted as a merely technical treatise on Latin metrics, but as a foundational text for an Augustinian theology of interiority. Through a close analysis of Book VI and the doctrine of the hierarchy of numbers (numeri sonori, sensibiles, memoriales, iudiciales, aeterni), the study demonstrates that the concept of numerus transcends quantitative or rhythmic analysis and becomes an ontological principle that unifies cosmology, anthropology, and theology.
At the heart of Augustine’s reflection lies the affirmation that “non in sonis, sed in anima est numerus”: the true locus of rhythm is not external sound but the interior structure of the soul. This shift from exteriority to interiority reveals that music functions as a pedagogical path—an itinerarium animae—leading from sensible perception to intelligible order and ultimately to participation in eternal measure. The hierarchy of numbers thus articulates a dynamic ascent: from temporal sound to interior judgment, from judgment to immutable numbers, and from immutable order to the divine Wisdom that grounds all intelligibility.
The article situates Augustine’s doctrine within its philosophical background, particularly the Pythagorean and Platonic conception of number as cosmic harmony, while highlighting Augustine’s decisive theological transformation of this heritage. For Augustine, number is not an autonomous metaphysical principle but a vestige of the Creator’s wisdom. The numerus is neither divinized nor absolutized; it is a participatory structure that points beyond itself. In this sense, the order perceived in music is not salvific in itself, but symbolic of a higher order to which the soul is called to conform through conversion and humility.
The study further explores the anthropological implications of the numerus interior, especially in relation to memory and temporality. Music becomes a privileged locus for experiencing the distensio animi, the tension of the soul across past, present, and future. Through rhythm, the soul discovers both its dispersion in time and its vocation to unity. The musical experience thus anticipates Augustine’s later reflections in the Confessiones on time and interiority, revealing De musica as a germinal text for his mature theology.
The argument culminates in an ecclesial and mystical horizon. The interior measure recognized by the soul finds fulfillment in the communal rhythm of liturgical chant, where the numerus interior becomes numerus ecclesialis. Yet even liturgical harmony is not the final term. Augustine does not absolutize sound: music ultimately leads beyond itself to contemplative silence. The silence of God is not the negation of rhythm, but its fulfillment in the tranquillitas ordinis. Thus, De musica emerges as a true theology of interiority, in which cosmological order, anthropological structure, participatory ontology, and mystical ascent converge. Music becomes the temporal figure of the Christian journey: from exteriority to interiority, from time to eternity, from dispersion to unity, and from modulation to loving rest in God.
DOI: https://doi.org/10.53438/WRRO5043
