Augustine can function as a unifying symbol for Christians and Muslims—less because he is “shared” in a theological sense (Islam does not regard him as a Christian authority) and more because his life and teaching offer a common Christian language of truth, interior conversion, and charity that becomes visible in shared North African history and in concrete forms of peaceful witness. The Church’s approach to interreligious dialogue—especially in North Africa—also shows how Augustine’s memory can be used as a bridge toward mutual respect, common good, and peace. 1 2 3

1) Augustine as a “shared horizon” for Christians—and a doorway toward Christian–Muslim encounter

Within Christianity, Augustine is repeatedly presented by the Church as a Father whose thought can gather traditions and promote renewed knowledge in a spirit of unity. Pope Benedict XVI, for example, praised a symposium on “St Augustine in the Western and Eastern traditions” precisely because Augustine is “of fundamental importance for the theology and for the culture of the West” and because bringing his “doctrinal and spiritual riches” into view with “historical objectivity and fraternal cordiality” helps Christians “build together the City of God.” 1

This is important for your question: unity here is not sentimental agreement; it is an effort to reach the truth of faith with charity. That same method can become a doorway to dialogue beyond Christianity.

In North Africa—the region where Augustine’s life is rooted and where Christian–Muslim coexistence has been historically lived—John Paul II explicitly connected Augustine’s commemoration with hope and with pastoral renewal. On the anniversary of Augustine’s conversion, he spoke of “the example of an astonishing itinerary” and of Augustine’s pastoral teaching that “keeps enlightening the Church and nourishing it.” He also identified love—“the master word of this Pastor”—as the key to ministry. 2

Then, in a more direct interreligious setting, John Paul II praised the work of the Church in the Maghreb and highlighted initiatives in which Augustine appears as a positive cultural-religious point of contact. He applauded the initiative of a colloquium dedicated to St Augustine, organized by Algerian authorities in partnership with the Church—an example of how Augustine can become part of the shared intellectual and spiritual life of a society where Christians and Muslims live together. 3

Key point: Augustine’s legacy can be unifying because it is publicly and historically meaningful in a shared cultural space, and the Church treats such engagement as a means to foster peace and mutual understanding rather than rivalry. 3 4

2) Augustine’s internal logic of unity: charity, not division

For Augustine, unity is not merely institutional. It has a moral and spiritual core: charity. Scholarly reflection on Augustine’s ecclesiology notes that, unlike Donatist thought with its “fully non-ecumenical ecclesiology,” Augustine develops a layered understanding of Church unity—moving from an “external unity” (through legitimate baptism) to an “internal unity of charity in the Spirit.” Schism, in this view, is ultimately “a sin against charity,” because “charity is always a unitive, not a divisive force.” 5

A second scholarly source, focusing on Augustine’s preaching against the Donatists, shows how Augustine’s response to violent factionalism avoids mirroring the enemy. He warns parishioners not to react with polarization, demonization, and a refusal to recognize real human connections across boundaries. Augustine instead urges hope for the possibility of love between “us” and “them,” warning that “security” is not guaranteed “while we are on pilgrimage.” 6

These two themes—(a) unity rooted in charity, and (b) refusal to intensify division through fear—are precisely the qualities that make Augustine a plausible unifying symbol for Christian–Muslim relations:

• They provide Christians with a non-violent, non-polarizing moral posture in plural societies.
• They keep unity tethered to the reality of persons (not only to abstract doctrinal boundaries).

So when you ask about Augustine as a unifying symbol, you are also asking about what kind of unity: Augustine’s is a unity that must be lived, especially when others tempt you into hatred or tribal logic. 5 6

3) Augustine’s influence on Christian witness in Muslim-majority contexts: charity that becomes “presence”

Augustine’s legacy also becomes symbolically unifying because it helps shape a Christian spirituality geared toward love of neighbor—something visible in dialogue settings where Muslims are not theoretical interlocutors but real neighbors.

A scholarly reflection connecting Pope Benedict XVI’s teaching to Augustine explains that Benedict offers what he calls “sacramental mysticism,” centered on Christ and dedicated to loving our neighbor with the love of Christ. That mysticism is “deeply influenced by the theology of St. Augustine,” and Augustine develops it in relation to martyrdom. 7

This matters for Christian–Muslim dialogue because the Church in North Africa has often framed witness not primarily as debate, but as presence, prayer, and sharing—a pattern illustrated by the Trappist monks of Tibhirine. In the same scholarly reflection, the monks’ life among their Muslim neighbors is presented as a “concrete model of the charity Pope Benedict wishes to promote.” Their witness included caring for neighbors’ medical needs, alleviating poverty, attending celebrations, sharing joys and sorrows, and praying continually. 8

The point is not that Augustine “replaced” dialogue with charity, but that Augustine’s theological instincts—love, unity, and spiritual realism under suffering—help Christians practice dialogue as credible love, even when costs are real. This is why Pope John Paul II could speak of mutual openness between religions serving “peace and the common good of the human family,” and also see martyrdom as “eloquent witness and fertile seed for Christian life.” 3

Key point: Augustine becomes a unifying symbol when his legacy is translated into a lived spirituality—charity that does not flee the world but engages it—which is intelligible and attractive to those who share the moral seriousness of human life. 3 8

4) How the Church frames Christian–Muslim dialogue, using Augustine as an example of “shared truth-seeking”

To understand why Augustine can unify Christians and Muslims, you should also look at how the Church describes the practice of dialogue.

John Paul II urged that Christian–Muslim relations should not be reduced to official exchanges; they should help “move beyond the stereotypes” and foster esteem for religious freedom and mutual respect—the “foundations of personal and social life.” He emphasized that contacts between religious cultures build “new bonds between persons.” 9

In North Africa specifically, he presented dialogue and collaboration between believers of different religions as a vocation that is a “richness for the Church universelle,” rooted in the region’s Christian history and present experience. 4

And in Algeria, he connected dialogue and Christian witness to concrete gestures: for example, in Morocco he noted that a meeting with Catholics and young people “gave new growth to relations and dialogue between Christians and Muslims,” and in Algeria he encouraged brotherhood with “all the Algerian people.” 10 11

Where does Augustine fit in this framework? Not as a theological authority for Muslims, but as:

1. A North African common cultural-religious reference that can be studied publicly and fruitfully (e.g., the St Augustine colloquium). 3
2. A Christian spiritual and moral teacher whose emphasis on love and unity can shape how Christians behave toward Muslims as real neighbors. 2 5 8
3. A historical bridge in the wider intellectual world, because medieval intellectual encounters with Islamic civilization included engagement with philosophical currents that were seen as compatible with—at least as tools for understanding—Augustinian thought (for example, discussion of how Western scholars used elements linked with illuminationist Augustinianism in contexts of encounter with Arabic thought). 12

5) Limits and caution: Augustine cannot be a “symbol” that replaces genuine truth claims

A unifying symbol should not become a way to blur the truth of Christianity or to treat dialogue as doctrinal indifference. Augustine himself—especially in the Donatist controversy—shows that unity requires moral conversion and charity, but it does not mean conceding truth in the name of peace. The Church’s documents and speeches consistently present dialogue as grounded in truth and the common good, not in relativism. 3 1

So the most accurate way to hold Augustine as a unifying symbol is this:

• Symbolically unifying through common moral language: love, unity, resistance to violence, and patient hope. 5 6
• Practically unifying through lived witness among Muslim neighbors, as exemplified by charitable presence and interreligious sharing of life. 8
• Intellectually unifying (within limits) through shared study and serious historical objectivity—especially in North Africa where Augustine’s legacy is part of public memory. 3

That is a unity the Church can honestly commend, because it is unity in the search for truth and the practice of charity. 3 1

Conclusion

Augustine’s legacy can unify Christians and Muslims when it is presented and lived in the Church’s spirit: historical seriousness, fraternal cordiality, and charity that resists polarization. Augustine’s emphasis on unity rooted in charity, his pastoral rejection of violent factional instincts, and his influence on Christian spirituality of presence all support a form of dialogue suited to plural societies in North Africa. 5 6 3 8