Introduction to Magnifica humanitas
An introduction to Pope Leo XIV’s first encyclical: the historical occasion of its publication, the biography of the pope who wrote it, and the argument of its five chapters.
Magnifica humanitas is the first encyclical of Pope Leo XIV. He signed it on 15 May 2026 and the Holy See published it on 25 May 2026, the 135th anniversary of Pope Leo XIII’s Rerum novarum (Leo XIV, 2026, para. 3; Piro, 2026). The date is the argument in miniature: a document written for the "new things" (res novae) of industrial society is renewed here for the "new things" of artificial intelligence, digitalisation and robotics (Leo XIV, 2026, para. 4).
Its subtitle names the subject precisely — on safeguarding the human person in the time of artificial intelligence — and the text runs to five chapters, moving from the Church’s social doctrine to the culture of power and the civilisation of love (Piro, 2026).
The pope who wrote it
Leo XIV was born Robert Francis Prevost on 14 September 1955 in Chicago, Illinois, the youngest of three children of Louis Marius Prevost and Mildred Agnes Martínez (Dicastery for Communication, n.d.). He read mathematics at Villanova University and entered the Order of Saint Augustine, making his first profession on 2 September 1978 and his solemn profession on 29 August 1981 (Dicastery for Communication, n.d.).
He was ordained a priest on 19 June 1982, and completed a doctorate in canon law at the Pontifical University of Saint Thomas Aquinas in Rome in 1985 (Dicastery for Communication, n.d.). The centre of gravity of his ministry, however, was Peru: he was assigned to the Augustinian mission in Chulucanas in 1985, worked in Trujillo from 1988, and acquired Peruvian citizenship by naturalisation on 24 August 2015 (Dicastery for Communication, n.d.). His order elected him Prior General in 2001 and confirmed him for a second term in 2007 (Dicastery for Communication, n.d.).
Appointed Bishop of Chiclayo in 2015, and Prefect of the Dicastery for Bishops in 2023, he was created a cardinal on 30 September 2023 (Dicastery for Communication, n.d.). The conclave opened on 7 May 2025 and elected him on 8 May 2025, when he took the name Leo XIV — the 267th successor of Saint Peter, the first pope from the United States of America, and the first Augustinian pope in the history of the Church (Dicastery for Communication, n.d.).
His episcopal motto, In Illo Uno Unum, is taken from Saint Augustine’s exposition of Psalm 127: "although we Christians are many, in the one Christ we are one" (Dicastery for Communication, n.d.). It is not incidental to the encyclical. A pope formed by Augustine and by two decades of missionary work in Peru argues about technology from the standpoint of communion rather than of control.
What the document argues
The text opens with two biblical images rather than with technology: the Tower of Babel (Genesis 11) and the rebuilding of the walls of Jerusalem under Nehemiah (Nehemiah 2–6) (Leo XIV, 2026, paras. 7–8). Its first sentence states the alternatives plainly:
Humanity, created by God in all its grandeur, is today facing a pivotal choice: either to construct a new Tower of Babel or to build the city in which God and humanity dwell together (Leo XIV, 2026, para. 1).
Babel is the project of uniformity and self-sufficiency, conceived without reference to God; Nehemiah’s wall is rebuilt by the shared labour of many, each family taking a section (Leo XIV, 2026, paras. 7–8). The contrast governs everything that follows.
On technology itself the document refuses both enthusiasm and refusal. Technology is not intrinsically opposed to humanity (Leo XIV, 2026, para. 4), but neither is it innocent:
In practice, however, technology is never neutral, because it takes on the characteristics of those who devise, finance, regulate and use it (Leo XIV, 2026, para. 9).
That sentence relocates the question. Since responsibility attaches to people rather than to tools, Chapter Two sets out the foundations and principles of Catholic social doctrine — the dignity of the person, the common good, the universal destination of goods, subsidiarity, solidarity and social justice — and applies them to a world in which, the pope argues, the principal drivers of technological development are private and often transnational actors whose resources surpass those of many governments (Leo XIV, 2026, para. 5).
Chapter Three turns directly to artificial intelligence. Taking up Pope Francis’s critique of the technocratic paradigm, the pope warns that moralising machines is not enough:
A more moral AI is not enough if that morality is determined by a few (Leo XIV, 2026, para. 107).
His proposal is captured in a single verb. Artificial intelligence, he writes, must be "disarmed":
To disarm does not mean rejecting technology, but preventing it from dominating humanity (Leo XIV, 2026, para. 110).
Against transhumanism and posthumanism he insists that limitation is not a defect to be eliminated but a dimension of the person through which relationship matures: "humanity flourishes not despite limitations, but often through them" (Leo XIV, 2026, para. 118).
Chapter Four treats truth, work and freedom — an "ecology of communication", the dignity of work in a digital transition, and new forms of dependency. Chapter Five names the "culture of power" and sets against it the "civilisation of love", with a critique of the normalisation of war and of weapons augmented by artificial intelligence (Piro, 2026).
One passage has drawn particular attention. Applying the five principles to the Church herself, the pope calls for an examination of conscience and for "purifying ecclesial relationships and structures from distortions that give rise to inequality, lack of transparency and abuse of power", including listening to victims of abuse (Leo XIV, 2026, para. 89; Piro, 2026).
Why it matters here
Magnifica humanitas is a social encyclical, and it stands in a line that runs from Rerum novarum (Leo XIII, 1891) through the magisterium of the twentieth century to Pope Francis (Leo XIV, 2026, paras. 30, 45). Its novelty lies in the subject rather than in the method: the pope does not invent a new doctrine for artificial intelligence but asks what the existing doctrine requires of the people who devise, finance, regulate and use it. The closing invitation is characteristic of the whole document — that even in the age of AI "we may bear witness to the grandeur of humanity, in which God has made His dwelling" (Piro, 2026).