Skip to content

Vatican to publish Pope Leo XIV’s first encyclical May 25

Pope Leo XIV signed his first encyclical, 'Magnifica Humanitas:' On Safeguarding the Human Person in the Time of Artificial Intelligence, on May 15, 2026, the 135th anniversary of the encyclical 'Rerum Novarum' by Pope Leo XIII. 'Magnifica Humanitas' was released on May 25, 2026. | Credit: Vatican Media. Image composition: EWTN News
Pope Leo XIV signed his first encyclical, 'Magnifica Humanitas:' On Safeguarding the Human Person in the Time of Artificial Intelligence, on May 15, 2026, the 135th anniversary of the encyclical 'Rerum Novarum' by Pope Leo XIII. 'Magnifica Humanitas' was released on May 25, 2026. | Credit: Vatican Media. Image composition: EWTN News

The pope signed ‘Magnifica Humanitas’ (“Magnificent Humanity”) on May 15, the 135th anniversary of the publication of the landmark social encyclical ‘Rerum Novarum.’

The Vatican announced Monday that Pope Leo XIV’s first encyclical will be published on May 25, with the title Magnifica Humanitas.

Pope Leo will speak at a presentation for the release of the social encyclical — a papal letter to the Church — at 11:30 a.m. Rome time on May 25, in the Vaticanʼs Synod Hall.

The Vatican also confirmed that the full title of the encyclical is Magnifica Humanitas: On the Protection of Human Dignity in the Age of Artificial Intelligence. Magnifica Humanitas is Latin for “Magnificent Humanity.”

Leo signed the letter, which is expected to provide moral guidance on the digital revolution and emerging technologies such as AI, on May 15.

The speakers at the encyclicalʼs presentation will be: Cardinal Víctor Manuel Fernández, prefect of the Dicastery for the Doctrine of the Faith; Cardinal Michael Czerny, SJ, prefect of the Dicastery for Integral Human Development; Anna Rowlands, professor of ethics and political theology at the University of Durham in the United Kingdom; Christopher Olah, co-founder of Anthropic USA; and Léocadie Lushombo, it, professor of theological ethics at the Jesuit School of Theology at Santa Clara University in Berkeley, California.

Secretary of State Cardinal Pietro Parolin will offer concluding remarks.

May 15 marked the 135th anniversary of the publication of Pope Leo XIII’s 1891 encyclical on capital and labor, Rerum Novarum, “Of New Things” — the first in a long line of social encyclicals produced in the modern era of the Catholic Church.

Pope Leo XIV indicated at the beginning of his pontificate that he intended to follow in the footsteps of his predecessor Leo XIII by responding to todayʼs Industrial Revolution: “developments in the field of artificial intelligence.”

Addressing the College of Cardinals on May 10, 2025, the new pope said he chose to take the name Leo XIV for various reasons, “but mainly because Pope Leo XIII in his historic Encyclical Rerum Novarum addressed the social question in the context of the first great industrial revolution.”

“In our own day,” he continued, “the Church offers to everyone the treasury of her social teaching in response to another industrial revolution and to developments in the field of artificial intelligence that pose new challenges for the defense of human dignity, justice and labor.”

This article was originally published by EWTN News English.

Receive the most important news from EWTN Vatican via WhatsApp. It has become increasingly difficult to see Catholic news on social media. Subscribe to our free channel today

Share

Would you like to receive the latest updates on the Pope and the Vatican

Receive articles and updates from our EWTN Newsletter.

I agree that EWTN will keep me informed about news, faith stories and how to best support their work. You will never receive e-mails from us that you do not want to receive. You can unsubscribe any time. For more information on how to unsubscribe, our privacy practices, and how we are committed to protecting and respecting your privacy, please review our Privacy Policy.

More news related to this article

Honoring the ‘saints next door’: Pope Francis calls for annual celebration of local holy men and women

Pope Francis wants dioceses worldwide to shine a spotlight on their “saints next door” every year on Nov. 9.

Five facts about Blessed Pius IX: The Pope who died “prisoner” in the Vatican

On February 7, the Church celebrates the memory of Blessed Pius IX, a determined Pope who made important

Pope Francis on Divine Mercy Sunday: The ‘fullness of life’ is ‘realized in Jesus’

Pope Francis during the Regina Caeli on Divine Mercy Sunday noted that the “fullness of life” comes not from the pursuit of transitory pleasure but is “realized in Jesus.”

Christmas at the Vatican: St. Peter’s Square Shines Bright for the Holidays

Discover the magic of Christmas at St. Peter’s Square with the majestic Norway Spruce and Grado Lagoon Nativity scene.
U.S. Secretary of State Marco Rubio meets Pope Leo XIV at the Vatican, Thursday, May 7, 2026. | Credit: Vatican Media

Pope Leo meets U.S. Secretary of State Rubio amid tensions with President Trump

The pontiff met with the secretary of state amid Trumpʼs ongoing criticism of the Holy Father and the

Read Pope Francis’ response to the dubia presented to him by 5 cardinals

Five cardinals have sent a set of questions known as “dubia” to Pope Francis to express their concerns

LIVE
FROM THE VATICAN

Be present live on EWTNVatican.com