
7746 words, 35 minute read.
Magnifica Humanitas both is and isn’t about AI. Or, more precisely, it is also about AI since it is the “new thing” (res nova) of our time that needs to be understood so as to be put at the service of humanity. It is primarily about why humanity (and its home) – both individually and collectively – are to be the the focus, what it looks like when the good of all is put first, and what principles ought to guide us towards such a goal. This is the social doctrine of the Catholic Church that Pope Leo sets out afresh here. It talks about dignity, inclusion, representation, justice and a preference for the poor, marginalised and excluded, and I believe it ought to sit well with most humanists, whether they be Christian or otherwise.
AI then naturally becomes the focus of the second part since its relationship to the common good needs to be reflected on and understood urgently, as its capabilities and ubiquity accelerate. Pope Leo does an excellent job both of recognising the potential good and warning about the dangers and “armed” use of AI, and he sets out a framework for how AI ought to be developed, used, overseen, and taught. I have found his point about AI not being a neutral technology particularly insightful. Take for example knives: they can be used to slice bread, perform life-saving surgery or stab someone to death. As a technology, they are neutral, and the morality of actions performed with them lies with their actors. AI systems, instead, can come with biases, deliberate skews, discrimination, disinformation, etc. already baked in. You may want to use it for good, but it may – often subtly or wholly imperceptibly – skew your good intentions. Something that a knife cannot do.
I wholeheartedly recommend the 43K-word encyclical in its entirety, and would here just like to share some of my favorite passages.
8. The Book of Nehemiah […] opens at a time of great vulnerability in the history of ancient Israel. After the Babylonian exile, a portion of the people returned to Jerusalem, but the city was still in ruins, the walls collapsed and the gates burned (cf. Neh 1–2). Nehemiah, a Jew in the service of the Persian King Artaxerxes, received news of the disastrous state of his ancestral city. Before taking action, he fasted, prayed and interceded for the people. He then asked the king for permission to return to Jerusalem and, upon arriving, examined the destroyed areas in silence. He did not impose solutions from above. He convened the families, assigned each of them a section of the wall to rebuild, listened to their concerns, coordinated their efforts and addressed any opposition. The narrative shows how the city is reborn, not through the initiative of one man, but through the shared responsibility of all: men, women, priests, artisans, heads of households and young people all play a part. It is an undertaking with God at the center, which rebuilds relationships before rebuilding with stones. Thus, ancient Jerusalem rediscovers a common language — not one of uniformity, but one of communion, namely the harmony that arises when all persons assume their own role and recognize that their strength comes from the Lord.
12. Building for the common good means accepting the limits and weakness of humanity without considering them an error to be corrected.
13. Thirdly, building a world in which everyone can flourish requires shared responsibility and courage. No one can single-handedly bear the weight of the challenges the world is facing, just as no one is so weak that they cannot play their part, for “power is made perfect in weakness” (2 Cor 12:9). All are given their own section of the wall: scientists and researchers, entrepreneurs and workers, educators and legislators, civil society, popular movements and faith communities. This is the logic of subsidiarity, which values the cooperation between generations, peoples, disciplines and cultures as the best way for fostering stability, prosperity and peace. We should not be intimidated by tensions or differences because they can become creative forces when guided by shared responsibility.
14. [B]uilding for the common good requires an evangelical language. We must avoid humiliating or antagonistic words, opting rather for a clarity that sheds light and a frankness that unlocks new possibilities. We cannot condone naïve enthusiasms, nor fuel unfounded fears. Instead, let us establish standards for discernment — the dignity of the human person, the universal destination of goods, the preferential option for the poor, care for our common home and peace — and let us translate these standards into practices such as responsible planning, the assessment of human and social impact, the inclusion of the most vulnerable, the promotion of digital literacy and guiding research and industry toward justice and peace.
46. I would like to focus on some of the foundations and principles of the Church’s Social Doctrine that will help us to interpret the “new things” of our time, particularly in view of the inherent dignity of the human person. In order to protect the human person in the age of artificial intelligence, I believe that today we must once again reflect on the common good, the universal destination of goods, subsidiarity, solidarity and social justice. I am convinced that a harmonious relationship between these principles requires that they be considered collectively, so that it becomes clear how they relate to and complement each other.
49. If the mystery of God as Love is the source of Social Doctrine, we see its most concrete expression in the face of Jesus Christ, the Incarnate Word. By becoming man, the Son of God enters our history and takes on human flesh, bringing with him the love that unites him to the Father and the Holy Spirit. In him, “the mystery of humanity truly becomes clear” because his humanity is completely free, open to others, capable of building healthy and beautiful relationships and committed to the total gift of self. Those who believe in him are engaged in the great work of renewal that began with the mystery of his passion, death and resurrection, and they cooperate in building up the Kingdom of God, learning to embrace all men and women as brothers and sisters, children of one Father. In this way, both the proclamation of the Gospel and Christian life, guided by the action of the Holy Spirit, tend to bring about social consequences in the world.
51. It is important to ensure that this growth in appreciation of human dignity is not obscured by the pressure of new ideologies or very powerful interests in today’s world. Among these ideologies, I consider particularly insidious the one that suggests that every person must earn or justify his or her own worth, to the point of attributing greater value to those who are more efficient or effective. From this perspective, persons end up being reduced to a means of achieving results, a resource to be used and exploited, and are no longer recognized as a proper end in themselves who should never be instrumentalized. The value of persons, however, does not depend on what they achieve or produce. There are rights that apply to everyone simply by virtue of being human, and no human power can legitimately deny or arbitrarily limit them.
52. When we speak of dignity, we do not always use the word in the same way. Sometimes we refer to moral dignity, namely the way in which a person directs his or her choices and actions. At other times, we think of social dignity, which refers to a person’s living conditions and the concrete respect received from society. In other cases, we refer to existential dignity, meaning the way in which a person perceives his or her own worth and the value of life. These aspects of dignity can be enhanced or diminished. In addition to these notions, there is also the more profound and important level of ontological dignity. This is the dignity that belongs to every human being simply by virtue of existing, of having been willed, created and loved by God. No sin, failure, humiliation or exclusion can diminish the profound value of a human life that God has willed and called into being.
59. Recognizing that every man and woman possesses an inalienable dignity, together with rights that no human power can betray or nullify, requires us to shape the way we live together, including our economic and political choices, and the makeup of our cities. From this arises the first major principle of Social Doctrine that I wish to highlight: the common good. We can describe it as the social expression of the dignity recognized in every person. When Benedict XVI referred to the non-negotiable values that the Church must always defend, he included among them “the promotion of the common good.” For a Christian, going beyond the narrow confines of one’s own interests and committing oneself, within the limits of one’s ability, to the common good is a non-negotiable value, as is the promotion of life.
67. Today, among the goods that are universally intended for everyone, we must also include new forms of property, such as patents, algorithms, digital platforms, technological infrastructure and data. In a context where the wealth of nations depends increasingly on knowledge and technology, when these goods remain concentrated in the hands of a few, without adequate forms of sharing and access, a new imbalance is created that contradicts the universal destination of goods. In turn, it widens the gap between the included and the excluded, between those who can participate in the digital revolution and those who remain on the margins. Furthermore, care for our common home and our responsibility toward the poor and future generations require that the use of the goods of creation and the new possibilities offered by technology be regulated in such a way as to respect the environment, avoid waste and prevent new forms of exploitation.
68. The principle of subsidiarity stems from the very same understanding of the human person that has guided our reflection on dignity and the common good. If every woman and man is called to take ownership of his or her own life and to contribute to the formation of society, then social institutions must also respect and support this responsibility. The Social Doctrine of the Church refers to subsidiarity as the principle according to which the role of individuals, families, local communities and intermediary organizations should not be supplanted by higher-level authorities. Moreover, higher-level institutions must recognize, protect and promote the freedom and creativity of lower-level entities, coordinating their contributions so that they can cooperate effectively for the common good.
70. This principle encourages us to move beyond any form of paternalistic or welfare-based management of societal life, but instead to promote a culture of shared responsibility in a State that values citizens’ initiative, and a civil society capable of forging bonds and mobilizing energies in the service of the common good. In accordance with the principle of subsidiarity, decisions are made at the closest level possible to the persons involved, thereby fostering community life and avoiding people being presented with decisions that have already been taken. In this way people can participate in the decision-making process. When families, associations, local communities, volunteer organizations and those in the so-called “third sector” are recognized and supported, social life becomes more accessible to people, services become more attuned to real needs, and solutions are more creative and respectful of the dignity of each person.
71. The principle of subsidiarity applies especially in the context of the digital revolution. Here, the highest level is not the State, but rather major economic and technological actors that exercise de facto power over the conditions of everyday life. This level, which monopolizes expertise, data and decision-making authority, involves companies and platforms that define conditions for access, rules of visibility, forms of interaction, and even economic opportunities. The principle of subsidiarity requires that such processes not be imposed from above in an opaque and unilateral manner, but instead be directed toward the common good with transparency, accountability and meaningful forms of participation (including independent checks, transparency regarding algorithms, equitable access to data and avenues for recourse).
72. In this context, States and transnational institutions are called to ensure fair rules and effective safeguards, so that local communities, intermediary organizations, schools, universities, religious institutions and associations have a voice and can contribute to the discernment of choices that affect people’s daily lives, such as employment, access to services, data management and digital environments. When it comes to decisions regarding economic flows and digital platforms, as well as the governance of data and algorithms, we cannot allow a handful of actors to dictate these processes on their own; instead, we must build forms of cooperation that respect the various levels of the global community and make them jointly responsible for the common good.
73 Solidarity, then, is the concrete recognition that the future of each individual is connected to the future of all; indeed, “no one is saved alone.” The close link between subsidiarity and solidarity thereby becomes evident. When subsidiarity is not linked to solidarity, it ends up becoming merely the protection of particular interests; when solidarity is not supported by subsidiarity, it degenerates into a form of welfare that does not foster responsibility. This interconnectedness also pertains to the responsibility of authentic participation. Solidarity is expressed when each person, both individually and collectively, takes part in the life of the community — by staying informed, engaging with others, making their voice heard and contributing to public decisions and choices — while also assuming real responsibility so that the common good is achieved through shared decision-making.
74. In many areas, we are already experiencing a kind of “ de facto solidarity,” for our lives are intertwined; digital networks connect people and communities across the world in real time, and global economies and communications mean that events in one place have a far-reaching impact. This network of relationships, however, only constitutes solidarity in the fullest sense of the word when it becomes a conscious choice. Faith invites us to see this reality as a call: we are not merely neighbors to one another, but entrusted to each other, so that each of us may take responsibility, as best we can, for the lives and wounds of our brothers and sisters. Solidarity arises precisely when we decide not to remain indifferent to what happens to our neighbor but instead to transform unavoidable bonds — economic, cultural and technological — into paths of sharing, cooperation and mutual care, embracing the idea of “thinking and acting in terms of community.”
77. For the Christian community, social justice is a concrete way of following Jesus and remaining faithful to the Gospel. In the New Testament, Jesus proclaims the “good news to the poor” ( Lk 4:18) and identifies himself with the lowly, the sick, the imprisoned and strangers (cf. Mt 25:31-46). He thus teaches us that justice is born from, and fulfilled in, fraternity, because the way we approach and relate to the least among us becomes, in concrete terms, the measure of our relationship with God and with our brothers and sisters. Justice, however, concerns not only the behavior of individuals, but also the way in which the structures of society are conceived and organized. In this regard, the Second Vatican Council reminds us that every institution is called to serve the human person and his or her dignity. Social justice is, therefore, characterized by the capacity of a social, economic and political order to allow everyone — particularly the weakest — to live a truly dignified life, without leaving anyone behind.
80. In this day and age, social justice must also grapple with the environment shaped by digital technologies. The spread of global networks, platforms and artificial intelligence systems is changing the way we obtain information, communicate and access services. Justice demands that we prevent the emergence of new forms of exclusion and deprivation of freedoms: individuals and peoples hindered or denied access to basic technologies, communities exposed to invasive surveillance and social groups penalized by opaque algorithms that perpetuate prejudice and discrimination. In the digital age, a just social order guarantees everyone equal access to opportunities, protects the youngest and weakest members of society, combats hate and misinformation and subjects the use of data and technology to public oversight, so that the guiding principle is not solely profit but the dignity of every person and the common good of all people.
81. A litmus test for social justice today is the treatment of migrants, refugees and those forced to move due to poverty, violence, climate change and environmental disasters. The way a society treats them reveals whether its sense of justice is driven by fear or by the spirit of fraternity. Pope Francis urged us to see migrants not simply as a problem to be managed, but as a living image of the People of God on the move. They are people with dignity, resources and dreams, who have the right to be treated with respect and to ask to become active members of the societies that welcome them. Social justice in this area entails at least two complementary commitments. On the one hand, this means protecting the rightful hopes of those forced to leave by ensuring safe and legal routes, dignified conditions for receiving them, and genuine pathways to integration. On the other hand, it means promoting the right to remain in one’s homeland in peace and security by addressing the root causes that force people to migrate, including those linked to economic injustices and the climate crisis. When these rights are respected, migration can become an opportunity for encounter and mutual enrichment among peoples.
83 Development is truly human when it places people at the center instead of the accumulation of wealth, and when it concerns peoples as well as individuals. Justice demands the recognition of the rights of society and the rights of peoples, and includes a responsibility toward future generations. Development is not truly human if it increases consumption for some while shifting costs and burdens onto others, or relegates entire regions to subordinate roles, preventing them from realizing their full potential. Development is integral when it is not limited to the economic sphere, but promotes quality of life in its spiritual, cultural, moral and relational dimensions, while respecting our common home, the diversity of peoples and their ways of life.
85. Technological innovations, including artificial intelligence, are not neutral, for they can either foster participation and justice or exacerbate inequality, control and exclusion. For this reason, they must be evaluated by asking a crucial question: Do they truly help individuals and peoples to become more humane and fraternal, while respecting our common home and future generations?
91. I am convinced that the concrete way of living out social relationships in the light of the Gospel is not established once and for all, but remains a task entrusted, from generation to generation, to the Christian community. Under the guidance of the Holy Spirit, the Church allows herself to be enlightened by God’s word, reads the signs of the times and creatively seeks new ways for relationships between peoples and nations to become ever more conformed to the demands of the Kingdom of God. For this reason, I encourage all members of the Church not to be afraid of the present challenges, but to listen to one another and firmly embrace their responsibilities in building a more humane and fraternal society.
104. We cannot consider AI to be morally neutral. In reality, every technical tool embodies choices and priorities through what it measures, ignores and optimizes, and how it classifies people and situations. If a system is designed or used in a way that treats some lives as less worthy, or excludes them without the possibility of appeal, then it is not merely a tool “to be used well,” since it has already introduced criteria that contradict the inalienable dignity of the human person. For this reason, ethical discernment cannot be limited to asking whether we are using a system for good or bad purposes; it must also examine how that system is designed and what vision of the human person and society is embedded in the data and models that guide it.
105. For AI to respect human dignity and truly serve the common good, responsibility must be clearly defined at every stage: from those who design and develop these systems to those who use them and rely on them for concrete decisions. In many cases, however, the internal processes leading to a result remain opaque, making it harder to assign responsibility and correct errors. This is where accountability becomes crucial: the possibility of identifying who must “account” for decisions, justify them, monitor them, and, when necessary, challenge them and remedy any harm caused.
108. In fact, as with every major technological shift, AI tends to amplify the power of those who already possess economic resources, expertise and access to data. In light of the common good and the universal destination of goods, this raises serious concerns, since small but highly influential groups can shape information and consumption patterns, influence democratic processes and steer economic dynamics to their own advantage, undermining social justice and solidarity among peoples. For this reason, it is essential that the use of AI, especially when it touches on public goods and fundamental rights, be guided by clear criteria and effective oversight, grounded in participation and subsidiarity. Communities and intermediary organizations must not be reduced to passive recipients of decisions made elsewhere; they must be able to contribute to discernment and oversight. Moreover, ownership of data cannot be left solely in private hands but must be appropriately regulated. Data is the product of many contributors and should not be treated as something to be sold off or entrusted to a select few. It is necessary to think creatively in order to manage data as a common or shared good, in a spirit of participation, as Saint John Paul II already suggested regarding collective goods.
109. The principles of Social Doctrine offer a framework for understanding this new reality. In a world where data, computational resources and regulatory influence remain in the hands of a few, to speak of the common good means exposing this new form of epistemic, economic and political asymmetry and naming the new monopolies of AI. To speak of the universal destination of goods means finding ways of ensuring universal access to both technologies and the education needed to use them. To speak of subsidiarity calls for protecting the ability of communities to make choices and corrections, rather than confining their role to mere oversight after the standards have been set elsewhere. To speak of solidarity obliges us to recognize the hidden, often exploited workers, who sustain algorithmic systems. To speak of justice requires questioning the global distribution of power that decides who in fact can train these models and who is merely subjected to them. Likewise, it means acknowledging that social justice is not only a goal to be safeguarded after technologies are deployed, but a condition that must shape their very design from the outset.
110. Finally, I would like to employ the expression “to disarm,” which is close to my heart. Disarming AI means freeing it from the mentality of “armed” competition, which today is not limited simply to the military context, but is also an economic and cognitive phenomenon. This entails a race for ever more powerful algorithms and larger datasets, driven by the desire to secure geopolitical or commercial dominance. To disarm means discrediting the assumption that technical power automatically confers the right to govern. To disarm does not mean rejecting technology, but preventing it from dominating humanity. It means freeing technology from monopolistic control and opening it to discussion and debate, therefore making it human-friendly and restoring it to the plurality of human cultures and ways of life. Our task today is not only ethical or technical. It is ecological in the deepest sense, for it concerns a new dimension of our common home. AI is already an environment in which we are immersed, as well as a force with which we must engage. For this reason, merely regulating it is insufficient; it must be disarmed, welcoming and accessible.
129. Christian humanism does not reject science or technology, but embraces them with gratitude and realism, and grounds them within a higher vocation. The creative intelligence of humanity is a gift that can alleviate suffering and open up new possibilities, but it must remain ordered toward the common good, justice, the care of the vulnerable and creation. In this sense, the true alternative is not between enthusiasm and fear, but between two paths of development: a progress that serves individuals and peoples, or a progress that subjects them to the mentality of power. Ultimately, the key question remains the one posed by Saint John Paul II: does AI “make human life on earth ‘more human’ in every aspect of that life? Does it make it more worthy of man?” If the answer is yes, then we can recognize it as an opportunity to be embraced responsibly, on a path of patient, shared reconstruction, akin to the rebuilding of Jerusalem narrated in the Book of Nehemiah. If, however, power grows while the heart withers and human bonds fray, then we are faced with a new form of Babel — a construction that is grandiose, yet fundamentally dehumanizing.
131. The digital transformation invites us to rediscover truth as a common good, to protect the dignity of work and to safeguard freedom against all forms of dependence and commercialization.
132. The use of digital platforms and AI systems is driving profound changes in public and political communication. Tools that could foster dialogue and participation are often used to construct distorted narratives and blur the boundaries between truth and falsehood, mixing facts with opinions. Disinformation did not begin with AI, yet today it finds a powerful amplifier in AI. The ability to manipulate content, images and videos exposes people to biased or misleading perspectives. This problem has both cultural and moral dimensions, since the quality of public communication depends directly on social trust and, in turn, shapes it. At the same time, truthful information does not arise from centralized or automated control. In public discourse, the truth of facts has a rational dimension, as it requires verification, cross-checking of sources and responsible argumentation. Moreover, it is deeply relational, built through bonds of trust and shared practices, as well as an honest exchange with others and with the world. Only the shared pursuit of the veracity of facts, perceived as a common good, can provide a solid foundation for just communication.
134. The search for truth is an essential element of democracy, which is itself a means of contributing to the common good. When questions about what is true lose their appeal, and a pragmatism takes hold that is content with what appears useful or effective, then democratic life is weakened. After all, democracy does not consist of rules and procedures alone, but above all of a solid concordance with the facts and a genuine commitment to the good of individuals and society as a whole. Indifference to the truth leads, slowly but surely, to a descent into totalitarianism. As the philosopher Hannah Arendt wrote, the ideal subjects of such regimes are not so much those who are ideologically convinced, but rather “people for whom the distinction between fact and fiction (i.e., the reality of experience) and the distinction between true and false (i.e., the standards of thought) no longer exist.”
137. Our first task is neither to demonize nor idolize technological tools, but to utilize them on the basis of a fundamental principle, namely that truth is a common good and not the property of those with power or influence.
149. Work is not simply an instrument; it expresses and enhances the dignity of our lives. It is a requirement of the human condition, a normal path toward maturity, development and personal fulfilment. In this regard, financial assistance to the poor may at times be necessary in emergencies, but it cannot become the sole response, since the goal is to enable each person to live with dignity through his or her own work.
152. It is certainly desirable for technology to relieve humans of arduous, repetitive or dangerous tasks and to provide intelligent support for human activity. Yet, the protection of employment opportunities and the irreplaceable role of the individual must remain the general rule. The pursuit of greater profits cannot justify choices that systematically sacrifice jobs, because the human person is an end, not a means, and the economic order must remain subordinate to human dignity and the common good.
153. At the same time, we must acknowledge that every real transition involves discontinuities, for it is uneven, fragmented and sometimes conflictual. Consequently, no single model of change or universal solution exists, since there are places and situations that require different responses. Given the inequality that characterizes our world, the spread of AI and computational systems produces varied effects in different places. Wealthy societies automate rapidly and chaotically, reducing the need for a workforce and creating room for unemployment and institutional friction. Vast regions of the world, by contrast, remain trapped in hybrid economies, where underpaid human labor and partial technologies coexist without achieving genuine transformation. These areas become places of precarious labor, and hotbeds of instability and forced migration. Therefore, solutions must be sought at national and local levels through the involvement of intermediary communities. We need adaptive tools, including well-structured models, local initiatives, progressive redistribution and new rights of access to essential goods. While not pursuing an abstract harmony, we must build concrete forms of human coexistence at this time of transformation.
156. At this time of transition, it is not enough to react only when jobs disappear; we must oversee the transformation in advance. One viable path is, first of all, to establish social criteria for innovation. Here, every introduction of automation and AI should be accompanied by verifiable measures to protect the employment, retraining and participation of workers. In this way, technology will be oriented toward freeing up human time and capabilities, rather than producing exclusion. Second, we need proactive policies that make continuous training and professional transitions accessible to all, ensuring that the cost of adaptation does not fall solely on individuals. Finally, there needs to be a corporate commitment to include quality and dignity of work among its indicators of success. When these conditions are present, innovation can serve as an ally of safer, more creative and dignified work; without them, innovation tends to become an accelerator of injustice.
161. While the world’s wealth has grown in absolute terms, it is increasingly concentrated in fewer hands, widening inequalities both within and between countries. “There are a few who have too much, and too many who have little, that is the logic of today.” Scientific and technological advances, even in the medical field, are not easily accessible to the vast majority of people, as was dramatically demonstrated during the recent pandemic. While some regions spend heavily on superfluous interventions or dreams of individual enhancement accessible only to a select few, other parts of the world lack the essential equipment needed to save millions of human lives. To think that new technologies will automatically benefit everyone is to ignore the evidence. Unless transformations at the design stage prioritize the prevention of new and further disparities, technological progress will inevitably produce structural inequalities. Today, justice requires access to the benefits of innovation, including care, knowledge, tools and opportunities.
173 A significant part of the digital economy’s functioning relies on the silent work of millions of people engaged in essential yet largely unseen activities, such as data labeling, model training and content moderation, often involving disturbing material. In many cases, these workers are young people, predominantly women, working under demanding conditions for minimal wages. Added to this invisible labor is the even harsher work of extracting the resources required for the production of the devices and microprocessors on which AI depends. In some regions of the world, children and adolescents work in dangerous conditions, crushing the materials from which rare earth elements are extracted. The bodies of these people are scarred, injured and worn down so that computational flow may continue uninterruptedly. Furthermore, criminal networks use online platforms, messaging systems, anonymous payment methods and profiling techniques in order to recruit, control and transport victims of trafficking — very often minors — reducing men and women to “data” to be tracked and “packages” to be moved around within the same digital circuits that support much of the global economy. This reality deeply challenges the moral conscience of our time. It is not enough to invoke efficiency, nor to celebrate the benefits of innovation, if they are built on a chain of exploitation that remains deliberately hidden. If technology promises emancipation, yet produces new forms of global subordination, it stands in contradiction to the fundamental principle of human dignity.
176. In the development of her doctrine, the Church has gradually come to a deeper awareness of the gravity of these issues. It is true that past events cannot be judged anachronistically, as though the moral criteria that matured over time had always been available. Yet neither can we deny or diminish the delay with which both society and the Church came to denounce the scourge of slavery. In antiquity and the Middle Ages many individuals and even ecclesiastical institutions had slaves. Already in the early modern period, the Apostolic See of Rome, responding to requests from Sovereigns, intervened several times in order to regulate and legitimize forms of subjugation, and, in certain cases, the enslavement of “infidels.” It was only in the nineteenth century that a formal, absolute and universal condemnation of slavery was clearly articulated, notably under Pope Leo XIII. This development offers a clear example of the Church’s growth in understanding the perennial truths of Revelation that she safeguards. Although there was not always consistency in practice — given that slavery was long tolerated before being unequivocally condemned — there has been a continuous affirmation throughout history of the dignity of every human being, created in the image of God, even if it took eighteen centuries for its full incompatibility with slavery to be explicitly recognized. This constitutes a wound in Christian memory, one from which we cannot consider ourselves detached. It is impossible not to feel deep sorrow when contemplating the immense suffering and humiliation endured by so many in stark contrast to their immeasurable dignity as persons infinitely loved by the Lord. For this, in the name of the Church, I sincerely ask for pardon.
183. The digital revolution is changing the nature of conflict. Alongside conventional warfare, there are hybrid forms such as cyberattacks, information manipulation, campaigns of influence and the automation of strategic decisions. AI acts as an accelerating factor in these processes, particularly within a context where many technologies are intrinsically ambivalent. Consequently, what is created for defense can be rapidly repurposed for offense, and the fine line between protection and aggression becomes blurred. While AI can enhance the defense and protection of civilians, it can also lower the threshold for the use of force, shield people from responsibility and foster a culture in which the enemy is reduced to a statistic and the victim to “collateral damage.” Faced with these transformations, we must recall the principles of Social Doctrine — the dignity of the person, the common good, the universal destination of goods, subsidiarity, solidarity and justice — for they are criteria for judging whether technologies truly serve humanity or are subjugating it. We should, therefore, consider these principles as guidelines for our decision-making.
191. We are also witnessing a disconcerting loss of historical memory, as first-hand accounts of the Holocaust and the two World Wars are disappearing. This leads to a selective or distorted rewriting of the past, in a context where fake news and the manipulation of narratives obscure the lessons that have been learned. Without a living memory of the horrors of war, political decisions risk being made on the basis of power alone, without any consideration for the long-term consequences.
192. War is not only fought, but also culturally conditioned through simplistic narratives, a friend-or-foe mentality, disinformation and fear. When historical memory fades and the ethical principles that protect civilians and the most vulnerable are weakened, it becomes easier to justify violence as necessary, inevitable or even “sanitized.” It is in this context that humanity is slipping into a violent culture of power, where peace no longer appears as a responsibility to be taken on, but as a fragile interval between conflicts. Today, more than ever, without prejudice to the right to self-defense in the strictest sense, it is important to reaffirm that the “just war” theory, which has all too often been used to justify any kind of war, is now outdated. Humanity possesses far more effective and capable tools for promoting human life and resolving conflicts, such as dialogue, diplomacy and forgiveness. The use of force, violence and weapons reflects a relational poverty that always has disastrous consequences for civilian populations.
198. Sometimes there is talk of “artificial moral agents,” as if machines were able to distinguish between right and wrong with greater consistency than a human being. Yet moral judgment cannot be reduced to calculation, for it involves conscience, personal responsibility and the recognition of the other as a person. Therefore, it is not permissible to entrust lethal or otherwise irreversible decisions to artificial systems. No algorithm can make war morally acceptable. AI does not remove the intrinsic inhumanity of conflict; indeed it can only bring about conflict more quickly and render it more impersonal, lowering the threshold for resorting to violence, transforming defense into threat prediction and thus reducing victims to data. In this way, it will accustom us to the idea that violence is inevitable and needs only to be optimized. This does not diminish the importance of instilling, as far as possible, values and sound judgment into the artificial systems we build, so that they can contribute to a moral ecosystem in which humans are better able to listen to their own consciences, as well as allowing AI models to establish appropriate boundaries.
200. All systems used in a war setting must guarantee the possibility of retracing and reconstructing decision-making processes, so that accountability and blame are not collapsed into “the machine.”
205. At the core of these issues is a false realism, based not only on the prevailing mentality of force, but on the cultural and anthropological belief that war is an inevitable part of human nature. It is said that things have always been this way, except for occasional pauses, and that it will always be so! As a result, the concern is no longer the search for peace — which has been lost as a point of reference on the international stage — but rather how and when to take military action. This same argument maintains that it would be irresponsible not to prepare for conflict. I would argue, however, that what is truly irresponsible is Realpolitik, the form of political “realism” that sows in consciences and in society an attitude of resignation to the inevitability of war, and dismisses peace and dialogue as utopian or irrational positions that ignore the risks at stake. In fact, peace is neither a naïve hope nor merely the absence of war; instead, it is always possible as the fruit of justice and charity.
206. In such a climate, nihilism and pragmatism become intertwined and end up normalizing grave errors. Religious extremism and identity-based fanaticism ally themselves with irrational economic policies, while politics often turns to misinformation and ridiculing opponents, and systematically cultivating fears and resentments. Thus, diversity is increasingly perceived as a threat, which fuels a desire for possession, a will to dominate, hegemonic ambitions, abuses of power and a fear of those who are different, thereby creating an environment in which new conflicts can develop almost imperceptibly.
212. At this point, however, a subtle temptation may emerge, namely the thought that the problems are too big and we are too small, and that our choices, therefore, cannot make a difference. This is a polite form of resignation, often disguised as realism. Certainly, not everyone has the same power to make a difference. There are those who govern, make investment decisions, lead institutions, conduct research, educate, produce or provide information, and then there are those who only seem to live their daily lives. Yet, no one is without responsibility. We all have our own areas for action, and it is precisely there — and nowhere else — that we must choose whether to fuel the mentality of force (even if only through indifference, cynicism, lies or hatred), or to preserve the mindset of peace (with truth, moderation, closeness and care).
213. The twentieth-century Catholic author J.R.R. Tolkien, in the words of a protagonist in one of his novels, described our responsibility in this way: “It is not our part to master all the tides of the world, but to do what is in us for the succour of those years wherein we are set, uprooting the evil in the fields that we know, so that those who live after may have clean earth to till.” The civilization of love will not arise from a single or spectacular gesture, but from the sum total of small and steadfast acts of fidelity that serve as a bulwark against dehumanization.
The need to disarm words
214. The first contribution we can make toward a more humane civilization is to be mindful of our words. “Let us disarm words and we will help to disarm the world.” Words have enormous power, something we experience in our daily interactions; for example, spoken words can change our mood for better or for worse. “Peace begins with each one of us: in the way we look at others, listen to others and speak about others. In this sense, the way we communicate is of fundamental importance: we must say ‘no’ to the war of words and images, we must reject the paradigm of war.” We must all, therefore, examine our conscience regarding the words we use, the prejudices we have and the explicit or implicit aggression that lies within them. We have a real opportunity to contribute to the common good each time we speak the truth, offer wise advice, support those in need of comfort, denounce injustice and give a voice to the voiceless.
Building peace through justice
215. All of us, at every level, can contribute to building the foundation of peace, which is justice. We do not merely seek any kind of peace — such as an absence of conflict at any cost — but instead, the true peace born of justice. “There exists a very close connection between the justice of the individual and the peace of everyone.” Commenting on the psalm verse “justice and peace have embraced” ( Ps84:11), Saint Augustine wrote: “There is no one who shuns the desire for peace, yet not everyone is willing to practice justice… But perform the works of justice, keeping in mind that justice and peace have embraced; they are not at odds with one another. Why do you set yourself against justice? Here, for example, is justice telling you not to steal, but you pay no heed; not to commit adultery, and you turn a deaf ear; not to do to others what you would not want done to yourself; not to say about your neighbor the things you would not want said about yourself… Do you therefore wish to attain peace? Then practice justice!” Let us never grow weary of seeking justice!
Adopting the perspective of victims
216. There are times when, in order to remain human, we must set aside our reservations and take a stand. In some conflicts, it is unjust to remain neutral, nor is it enough merely to claim that we are not complicit. When we witness the bombing of civilians, attacks on hospitals, schools or vital infrastructure, and violence that affects children, we are confronted with scandals that wound humanity itself. For this reason, we cannot limit ourselves to the level of abstract analysis. Pope Francis encouraged us to “touch the wounded flesh” of those who suffer, look at their faces, listen to their stories and acknowledge their wounds. Painful events require both history and memory, the former to recount the facts, the latter to bear witness to lived experiences.
217. Giving space to the perspectives and voices of victims through communication and education helps us to become aware of the abyss of evil inherent in war, and generally in all forms of violence. It helps us to reject the normalization of conflict; not to turn away when human dignity is violated; and to restore to victims the dignity of being recognized and heard. Paying attention to these voices strengthens the conviction that, apart from violent minorities, humanity does not desire war. In a particular way, the Church can be a place of living memory for victims. As Saint Paul VI recalled, the Church feels she must make her own both the voice of those who died in past wars and the voice of the living who still bear wounds today, so that their cries may become an appeal for peace and harmony and not a prelude to new conflicts.
Cultivating a healthy realism
218. We are in need of a healthy realism that avoids both political idealism and cynicism. There is a kind of idealism that, in order to preserve its own worldview, tends to choose facts selectively, distorting and renaming them. Its proponents eventually, inhabit a reality constructed to fit their own convictions. Conversely, there is also a debased form of realism that confuses observation with resignation, arguing that since force prevails, it will always prevail. Authentic realism does not give up on changing the world; indeed, it starts by clearly identifying interests, fears, constraints and power dynamics, precisely in order to determine what can be achieved, and the measures needed to achieve it. It does not reduce politics to morality; neither does it surrender to violence. Instead, it seeks viable paths for making peace more than a mere word, through credible institutions, verifiable guarantees, patient negotiations, conflict prevention and the protection of civilians.




