Pope Leo XIII

Archbishop Pecci enters Perugia in 1846.

In 1843, Pecci had been named papal assistant. From 1846 to 1877, he was considered a popular and successful Archbishop of Perugia. In 1847, after Pope Pius IX granted unlimited freedom for the press in the Papal States,[15] Pecci, who had been highly popular in the first years of his episcopate, became the object of attacks in the media and at his residence.[16] In 1848, revolutionary movements developed throughout Western Europe, including France, Germany and Italy. Austrian, French and Spanish troops reversed the revolutionary gains but at a price for Pecci and the Catholic Church, who could not regain their former popularity.

Pecci called a provincial council in 1849 to reform the religious life in his dioceses in Spoleto and it was in this council that the need for a Syllabus of Errors was discussed.[17][18] He invested in enlarging the seminary for future priests and in hiring new and prominent professors, preferably Thomists. He called on his brother Giuseppe Pecci, a noted Thomist scholar, to resign his professorship in Rome and to teach in Perugia instead.[19] His own residence was next to the seminary, which facilitated his daily contacts with the students.

Archbishop Pecci aids the poor in Perugia.

While archbishop, Pecci developed several activities in support of various Catholic charities. He founded homeless shelters for boys, girls and elderly women. Throughout his dioceses, he opened branches of a Bank, Monte di Pietà, which focused on low-income people and provided low-interest loans.[20] He created soup kitchens, which were run by the Capuchins. Upon his elevation to the cardinalate in late 1853, and in light of continuing earthquakes and floods, he donated all resources for the festivities of his elevation to the victims. Much of the public attention turned on the conflict between the Papal States and Italian nationalism, which aimed at the Papal States' annihilation to achieve the Unification of Italy.

In the consistory of 19 December 1853, he was elevated to the College of Cardinals, as Cardinal-Priest of S. Crisogono. Pope Gregory XVI originally intended to name him as a cardinal however, his death in 1846 put pause to that idea while the events that characterized the beginning of the papacy of Pius IX further postponed the idea of Pecci's elevation. By the time that Gregory XVI died, Leopold II repeatedly asked that Pecci be named as a cardinal.[21] While Pius IX strongly desired having Pecci as close to Rome as possible, and repeatedly offered him a suburbicarian see, Pecci continually refused due to his preference for Perugia. It is possible that the archbishop did not share the views of the Cardinal Secretary of State, Giacomo Antonelli. It is not true that Pius IX deliberately sent him to Perugia as a way of exiling him from Rome simply because Pecci's views were perceived to be liberalistic and conciliatory, as opposed to the conservatism of the papal court.[21]

Allegedly, Pecci had been a cardinal reserved "in pectore" by Gregory XVI in the consistory of 19 January 1846, with the pope's death just over four months later invalidating the appointment since his name was never actually revealed publicly.[5]

Pecci defended the papacy and its claims. When Italian authorities expropriated convents and monasteries of Catholic orders, turning them into administration or military buildings, Pecci protested but acted moderately. When the Italian state took over Catholic schools, Pecci, fearing for his theological seminary, simply added all secular topics from other schools and opened the seminary to non-theologians.[22] The new government also levied taxes on the Catholic Church and issued legislation according to which all episcopal or papal utterances were to be approved by the government before their publication.[23]

On 8 December 1869, an ecumenical council, which became known as the First Vatican Council, was to take place in the Vatican per Pope Pius IX. Pecci was likely well informed since the Pope named his brother Giuseppe to help prepare the event.

During the 1870s, in his last years in Perugia, Pecci addressed the role of the church in modern society several times, defining the church as the mother of material civilization because it upheld human dignity of working people, opposed the excesses of industrialization and developed large-scale charities for the needy.[24]

In August 1877, on the death of Cardinal Filippo de Angelis, Pope Pius IX appointed him Camerlengo, which required him to reside in Rome.[25] Reportedly, Pius IX is alleged to have said to Pecci: "Monsignor, I have decided to summon you to the Senate of the Church. I feel sure this will be the first act of my pontificate that you will not feel called upon to criticize". These comments were reported to have been said due to the stories that Pecci and Pius IX had a mutual animosity for each other and disagreed with each other in terms of policy, however, this purported animosity has never been proven. It was further alleged that by this stage Pecci desired a change of scenery from Perugia and hoped for either the bishopric of Albano or the position of datary of the Apostolic Dataria. It has also been said that Pecci was reportedly in line to succeed Cardinal Alessandro Barnabò as the prefect for Propaganda Fide, however, it was stymied by his opponent, Cardinal Antonelli.[5]

Depiction of Leo XIII's papal coronation – image c. 1900

Pope Pius IX died on 7 February 1878,[25] and during his closing years the liberal press had often insinuated that the Kingdom of Italy should take a hand in the conclave and occupy the Vatican. However the Russo-Turkish War (1877–1878) and the sudden death of King Victor Emmanuel II (9 January 1878) distracted the government's attention.

In the conclave, the cardinals faced varied questions and discussed issues like church–state relations in Europe, specifically Italy; divisions in the church and the status of the First Vatican Council. It was also debated that the conclave be moved elsewhere, but Pecci decided otherwise in his capacity as the camerlengo. On 18 February 1878, the conclave assembled in Rome. Cardinal Pecci was elected on the third ballot and chose the name Leo XIII.[25] He was crowned on 3 March 1878.

During the conclave, he secured his election on the third scrutiny with 44 out of 61 votes, more than the requisite two-thirds majority. While the 1878 conclave was characterized by fewer political influences than in previous conclaves due to a variety of European political crises, it was generally believed that the long papacy of the conservative Pius IX led many of the cardinals to vote for Pecci due to his relatively young age, added to the fact that his health created expectations that his papacy would be somewhat brief.[26] Following the conclave, John Henry Newman is reported to have said, "In the successor of Pius IX recognize a depth of thought, a tenderness of heart, a winning simplicity, and a power answering to the name of Leo, which prevent me from lamenting that Pius is no longer here".[26] In the conclave, Pecci was perceived as the main "papabile" candidate however, Cardinals Flavio Chigi and Tommaso Maria Martinelli were also considered as potential candidates. But some cardinals who opposed Pecci, and were alarmed at the rising votes he was securing, banded together to cast their ballots for Cardinal Alessandro Franchi, however, Franchi secured no votes in the final ballot that saw Pecci duly elected. Allegedly, those who were dedicated to thwarting his election were Cardinals Oreglia, Giannelli, Chigi, Lorenzo Ilarione Randi, Sacconi, Monaco, Amat, and Franzelin. It was also suggested that, before his death, Pius IX heavily favored Cardinal Bilio to succeed him, however, while many of the cardinals created by the late pope intended to vote for him to honor the man that elevated them in the first place, they feared that voting for an ultra-conservative could potentially evoke a veto from one of the European powers and stall the election more than was necessary. To that end, there had been early talks about Austria possibly vetoing Bilio however, this never occurred.[26] Before the conclave, Cardinals Domenico Bartolini, Monaco, Bilio, Manning, Nina, and Franchi (proposed by Pecci's opponents) all agreed on supporting Pecci's candidacy, also determining that the next pope needed to be an Italian. Both Manning and Edward Henry Howard agreed to persuade the foreign cardinals to back Pecci's candidacy.[27][26]

Upon his election, he announced that he would assume the name "Leo" in memory of Pope Leo XII due to his admiration for the late pope's interest in education and his conciliatory attitude toward foreign governments.[27] When asked what name he would take, the new pope responded: "As Leo XIII, in remembrance of Leo XII, whom I have always venerated". His election was formally announced to the people of Rome and the world at 1:15pm.[5]

He retained the administration of the Perugia see until 1880.

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Social teachings of the papacy Distributism Solidarity Subsidiarity Tranquillitas ordinis
Pope Leo XIII Rerum novarum
Pope Pius XI Divini redemptoris Mit brennender Sorge Non abbiamo bisogno Quadragesimo anno
Pope Pius XII Social teachings
Pope John XXIII Mater et magistra Pacem in terris
Second Vatican Council Dignitatis humanae Gaudium et spes
Pope Paul VI Octogesima adveniens Populorum progressio
Pope John Paul II Laborem exercens Sollicitudo rei socialis Centesimus annus Evangelium vitae
Pope Benedict XVI Caritas in veritate
Pope Francis Evangelii gaudium Laudato si' Fratelli tutti
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Photogram of the 1896 film Sua Santità papa Leone XIII, the first time a Pope appeared on film

As soon as he was elected to the papacy, Leo XIII worked to encourage understanding between the church and the modern world. When he firmly reasserted the scholastic doctrine that science and religion coexist, he required the study of Thomas Aquinas[28] and opened the Vatican Secret Archives to qualified researchers, among whom was the noted historian of the Papacy Ludwig von Pastor. He also refounded the Vatican Observatory "so that everyone might see clearly that the Church and her Pastors are not opposed to true and solid science, whether human or divine, but that they embrace it, encourage it, and promote it with the fullest possible devotion."[29]

Pope Leo XIII and his inner court at the Vatican, photographed by Jules David in June 1878

Leo XIII was the first Pope of whose voice a sound recording was made. The recording can be found on a compact disc of Alessandro Moreschi's singing; a recording of his praying of the Ave Maria is available on the Web.[30] He was also the first Pope to be filmed by a motion picture camera. He was filmed by its inventor, W. K. Dickson, and blessed the camera while being filmed.[31] Born in 1810, he is also the earliest born person to appear in a film.

Leo XIII brought normality back to the Catholic Church after the tumultuous years of Pius IX. Leo's intellectual and diplomatic skills helped regain much of the prestige lost with the fall of the Papal States. He tried to reconcile the church with the working class, particularly by dealing with the social changes that were sweeping Europe. The new economic order had resulted in the growth of an impoverished working class who had increasing anticlerical and socialist sympathies. Leo helped reverse that trend.

Although Leo XIII was no radical in either theology or politics, his papacy moved the Catholic Church back to the mainstream of European life. Considered a great diplomat, he managed to improve relations with Russia, Prussia, Germany, France, Britain and other countries.

Pope Leo XIII was able to reach several agreements in 1896 that resulted in better conditions for the faithful and additional appointments of bishops. During the fifth cholera pandemic in 1891, he ordered the construction of a hospice inside the Vatican. That building would be torn down in 1996 to make way for construction of the Domus Sanctae Marthae.[32]

Leo was a drinker of the cocaine-infused wine tonic Vin Mariani, a precursor drink to Coca-Cola.[33] He awarded a Vatican gold medal to the wine's creator, Angelo Mariani, and also appeared on a poster endorsing it.[34] Leo XIII was a semi-vegetarian. In 1903, he attributed his longevity to the sparing use of meat and the consumption of eggs, milk and vegetables.[35]

His favourite poets were Virgil and Dante.[36]

Pope Leo XIII began his pontificate with a friendly letter to Tsar Alexander II in which he reminded the Russian monarch of the millions of Catholics living in his empire who would like to be good Russian subjects if their dignity were respected.

After the assassination of Alexander II, the Pope sent a high ranking representative to the coronation of his successor, Alexander III, who was grateful and asked for all religious forces to unify. He asked the Pope to ensure that his bishops abstain from political agitation. Relations improved further when Pope Leo XIII, because of Italian considerations, distanced the Vatican from the Rome-Vienna-Berlin alliance, and helped to facilitate a rapprochement between Paris and St. Petersburg.

Under Otto von Bismarck, the anti-Catholic Kulturkampf in Prussia led to significant restrictions on the Catholic Church in Imperial Germany, including the Jesuits Law of 1872. During Leo's papacy, compromises were informally reached and the anti-Catholic attacks subsided.[37]

The Centre Party in Germany represented Catholic interests and was a force for social change. It was encouraged by Leo's support for social welfare legislation and the rights of working people. Leo's forward-looking approach encouraged Catholic Action in other European countries, where the social teachings of the church were incorporated into the agenda of Catholic parties, particularly the Christian democratic parties, which became an acceptable alternative to socialist parties. Leo's social teachings were reiterated throughout the 20th century by his successors.

In his Memoirs,[38] Kaiser Wilhelm II discussed the "friendly, trustful relationship that existed between me and Pope Leo XIII." During Wilhelm's third visit to Leo: "It was of interest to me that the Pope said on this occasion that Germany must be the sword of the Catholic Church. I remarked that the old Roman Empire of the German nation no longer existed, and that conditions had changed. But he adhered to his words."

Leo XIII possessed a great affection for France, and feared that the Third Republic would take advantage of the fact that most French Catholics were Royalists to abolish the Concordat of 1801. At the advisement of Cardinal Rampolla, he urged French Catholics to "rally" to the republic.[39] Leo's decision upset many French monarchists, who felt they were being forced to betray their king for their faith. Ultimately, this move split the French Church politically and decreased its influence in France. Leo's move also failed to prevent the Concordant's eventual repealment, as it was later abrogated by the law of 1905 on the separation of Church and state.[40]

Silver medal celebrating Pope Leo XIII's 1891 inauguration of the new observatory

In the light of a climate hostile to the Catholic Church, Leo continued the policies of Pius IX towards Italy without major modifications.[41] In his relations with the Italian state, Leo continued the Papacy's self-imposed incarceration-in-the-Vatican stance and continued to insist that Italian Catholics should not vote in Italian elections or hold any elected office. In his first consistory in 1879, he elevated his older brother, Giuseppe, to the cardinalate. He had to defend the freedom of the church against what Catholics considered Italian persecutions and attacks in the area of education, expropriation and violation of Catholic Churches, legal measures against the church and brutal attacks, culminating in anticlerical groups attempting to throw the body of the deceased Pope Pius IX into the Tiber on 13 July 1881.[42] The Pope even considered moving his residence to Trieste or Salzburg, two cities in Austria, an idea that Emperor Franz Joseph I gently rejected.[43]

Among the activities of Leo XIII that were important for the English-speaking world, he restored the Scottish hierarchy in 1878. The following year, on 12 May 1879, he raised to the rank of cardinal the convert clergyman John Henry Newman,[44] who would eventually be beatified by Pope Benedict XVI in 2010 and canonized by Pope Francis in 2019. In British India, too, Leo established a Catholic hierarchy in 1886 and regulated some longstanding conflicts with the Portuguese authorities. A Papal Rescript (20 April 1888) condemned the Irish Plan of Campaign and all clerical involvement in it as well as boycotting, followed in June by the papal encyclical "Saepe Nos"[45] that was addressed to all the Irish bishops. Of outstanding significance, not least for the English-speaking world, was Leo's encyclical Apostolicae curae on the invalidity of the Anglican orders, published in 1896. In 1899, he declared Bede the Venerable a Doctor of the Church.

In 1880, the Santa Maria de Montserrat Abbey in Catalonia celebrated 1000 years of existence. On 11 September 1881, to coincide with the Catalan national day, Leo XIII proclaimed the Virgin of Montserrat to be Patron of Catalonia. This had implications beyond the purely religious sphere, influencing the development of Catalan nationalism.

Leo XIII welcomed the elevation of Prince Ferdinand of Saxe-Coburg (the later Ferdinand I of Bulgaria) to the Bulgarian Principality in 1886. A fellow Catholic, whose wife was a member of the Italian House of Bourbon-Parma, the two had a lot in common. However, relations between the two greatly soured when Ferdinand expressed his intention to convert his eldest son Crown Prince Boris (later Tsar Boris III) to Orthodoxy, the majority religion of Bulgaria. Leo strongly condemned the action, and when Ferdinand went through with the conversion anyway, Leo excommunicated him.

In 1889, Pope Leo XIII authorized the founding of The Catholic University of America in Washington, D.C., and granted it Papal degrees in theology.

The United States frequently attracted his attention and admiration. He confirmed the decrees of the Third Plenary Council of Baltimore (1884) and raised James Gibbons, the archbishop of that city, to the cardinalate in 1886.

Also in 1884, Pope Leo XIII established the See of Helena (St. Helena) in the territorial capital of Montana, which five years later would become the state capital.

On 10 April 1887, a pontifical charter from Pope Leo XIII founded the Catholic University of America, establishing the national university of the Catholic Church in the United States.

American newspapers criticized Pope Leo because they claimed that he was attempting to gain control of American public schools.[46] One cartoonist drew Leo as a fox unable to reach grapes that were labeled for American schools; the caption read "Sour grapes!"[47]

In 1892, Pope Leo XIII opened the Vatican archives to William Eleroy Curtis, a special envoy planning the commemoration of Christopher Columbus at the 1893 World's Columbian Exposition.[48][49]

Pope Leo XIII is also remembered for the First Plenary Council of Latin America held at Rome in 1899, and for his encyclical of 1888 to the bishops of Brazil, In plurimis, on the abolition of slavery. In 1897 he published the Apostolic Letter Trans Oceanum, which dealt with the privileges and ecclesiastical structure of the Catholic Church in Latin America.[50]

His role in South America will also be remembered, especially the pontifical benediction extended over Chilean troops on the eve of the Battle of Chorrillos during the War of the Pacific in January 1881. The Chilean soldiers thus blessed then looted the cities of Chorrillos and Barranco, including the churches, and their Chaplains headed the robbery at the Biblioteca Nacional del Perú, where the soldiers ransacked various items along with much capital, and Chilean Priests coveted rare and ancient editions of the Bible that were stored there.[51]

Pope Leo XIII urged "Filii tui India, administri tibi salutis" (Your own sons, O India, will be the heralds of your salvation)[52] and founded the national seminary, called Papal Seminary. He entrusted this task to the then Apostolic Delegate to India Ladislaus Michael Zaleski, who founded the Seminary in 1893.

Pope Leo XIII sanctioned the missions to Eastern Africa beginning in 1884.[44] In 1879 Catholic missionaries associated with the White Father Congregation (Society of the Missionaries of Africa) came to Uganda and others went to Tanganyika (present-day Tanzania) and Rwanda.

In 1887, he approved the foundation of Missionaries of St. Charles Borromeo, which were organized by the Bishop of Piacenza, Giovanni Battista Scalabrini. The missionaries were sent to North and South America to do pastoral care for Italian immigrants.

Giuseppe Pecci in 1887. At the urgent requests of the College of Cardinals, Leo XIII in 1879 elevated his brother, Giuseppe Pecci, a Jesuit and prominent Thomist theologian, into their ranks.[53]

Leo XIII also approved a number of Scapulars. In 1885, he approved the Scapular of the Holy Face, (also known as The Veronica) and elevated the Priests of the Holy Face to an archconfraternity.[54] He also approved the Scapular of Our Lady of Good Counsel and the Scapular of St. Joseph, both in 1893, and the Scapular of the Sacred Heart in 1900.[55]

As Pope, he used all his authority for a revival of Thomism, the theology of Thomas Aquinas. On 4 August 1879, Leo XIII promulgated the encyclical Aeterni Patris ("Eternal Father"), which, more than any other single document, provided a charter for the revival of Thomism, the medieval theological system based on the thought of Aquinas – as the official philosophical and theological system of the Catholic Church. It was to be normative not only in the training of priests at church seminaries but also in the education of the laity at universities.

Pope Leo XIII then created the Pontifical Academy of St. Thomas Aquinas on 15 October 1879 and ordered the publication of the critical edition, the so-called Leonine Edition, of the complete works of the doctor angelicus. The superintendence of the leonine edition was entrusted to Tommaso Maria Zigliara, professor and rector of the Collegium Divi Thomae de Urbe, the future Pontifical University of Saint Thomas Aquinas, Angelicum. Leo XIII also founded the Angelicum's Faculty of Philosophy in 1882 and its Faculty of Canon Law in 1896.

The Blessed Sister Mary of the Divine Heart was a religious sister from the Congregation of Our Lady of Charity of the Good Shepherd who requested Pope Leo XIII to consecrate the entire world to the Sacred Heart of Jesus.[56]

Pope Leo XIII performed a number of consecrations, at times entering new theological territory. After he had received many letters from Sister Mary of the Divine Heart, the countess of Droste zu Vischering and Mother Superior in the Convent of the Good Shepherd Sisters in Porto, Portugal, asking him to consecrate the entire world to the Sacred Heart of Jesus, he commissioned a group of theologians to examine the petition on the basis of revelation and sacred tradition. The outcome of this investigation was positive and so in the encyclical letter Annum sacrum (on 25 May 1899), he decreed that the consecration of the entire human race to the Sacred Heart of Jesus should take place on 11 June 1899.

The encyclical letter also encouraged the entire Catholic episcopate to promote the First Friday Devotions, established June as the Month of the Sacred Heart, and included the Prayer of Consecration to the Sacred Heart.[57] His consecration of the entire world to the Sacred Heart of Jesus presented theological challenges in consecrating non-Christians. Since about 1850, various congregations and countries had consecrated themselves to the Sacred Heart, and, in 1875, the consecration was made throughout the Catholic world.

Leo introduced the promotion of monthly prayer intentions in 1890, which he entrusted to the Apostleship of Prayer (now the Pope's Worldwide Prayer Network).[58]

In his 1893 encyclical Providentissimus Deus, he described the importance of scriptures for theological study. It was an important encyclical for Catholic theology and its relation to the Bible, as Pope Pius XII pointed out 50 years later in his encyclical Divino Afflante Spiritu.[59]

Pope Leo XIII fostered relations of goodwill, particularly towards the churches of the East not in communion with the Apostolic See. He also opposed efforts to Latinize the Eastern Rite Churches and stated that they constitute a most valuable ancient tradition and symbol of the divine unity of the Catholic Church. He expressed that in his encyclical "Orientalium Dignitas" of 1894 and wrote, "The Churches of the East are worthy of the glory and reverence that they hold throughout the whole of Christendom in virtue of those extremely ancient, singular memorials that they have bequeathed to us."

John Henry Newman was raised into the College of Cardinals by Pope Leo XIII.

Leo XIII is credited with great efforts in the areas of scientific and historical analysis. He opened the Vatican Archives and personally fostered a 20-volume comprehensive scientific study of the Papacy by Ludwig von Pastor, an Austrian historian.[60]

His predecessor, Pope Pius IX, became known as the Pope of the Immaculate Conception because of his dogmatization in 1854. Leo XIII, in light of his unprecedented promulgation of the rosary in 11 encyclicals, was called the Rosary Pope because he promulgated Marian devotion. In his encyclical on the 50th anniversary of the Dogma of the Immaculate Conception, he stresses Mary's role in the redemption of humanity and calls her Mediatrix and Co-Redemptrix. While allowing the title "Mediatrix", recent popes, following on the Second Vatican Council, have warned away from the term "co-redemptrix" as derogating from the one mediator, Jesus Christ.[61][62][63]

Leo XIII worked to encourage understanding between the Catholic Church and the modern world, but he preferred a cautious view on freedom of thought, stating that it "is quite unlawful to demand, defend, or to grant unconditional freedom of thought, or speech, of writing or worship, as if these were so many rights given by nature to man." Leo's social teachings are based on the Catholic premise that God is the Creator of the world and its Ruler. Eternal law commands the natural order to be maintained, and forbids that it be disturbed; men's destiny is far above human things and beyond the earth.

Charles M. Johnson, Pope Leo XIII, 1899, National Gallery of Art

Portrait by Philip de László, 1900

His encyclicals changed the church's relations with temporal authorities; the 1891 encyclical Rerum novarum, for the first time, addressed social inequality and social justice issues with papal authority by focusing on the rights and duties of capital and labour. He was greatly influenced by Wilhelm Emmanuel von Ketteler, a German bishop who openly propagated siding with the suffering working classes in his book Die Arbeiterfrage und das Christentum. Since Leo XIII, papal teachings have expanded on the rights and obligations of workers and the limitations of private property: Pope Pius XI's Quadragesimo anno, the social teachings of Pope Pius XII on a huge range of social issues, John XXIII's Mater et magistra in 1961, Pope Paul VI's Populorum progressio on world development issues, Pope John Paul II's Centesimus annus, commemorating the 100th anniversary of Rerum novarum, and Pope Francis' Laudato si' on the use of the goods of creation.

Leo had argued that both capitalism and communism are flawed. Rerum novarum introduced the idea of subsidiarity, the principle that political and social decisions should be taken at a local level, if possible, rather than by a central authority, into Catholic social thought. (See list of Encyclicals of Pope Leo XIII.)

Throughout his pontificate, Leo XIII elevated 147 cardinals in 27 consistories. While the limit of the College of Cardinals had been set at 70 since the papacy of Pope Sixtus V, Leo XIII never exceeded nor reached the limit, only ever coming close at 67 in 1901.[64] Amongst the noteworthy cardinals whom he elevated, he named John Henry Newman as a cardinal while also elevating his own brother Giuseppe Pecci, though not a nepotistic act (it was based purely on recommendation and merit), in the same consistory. In 1893, he elevated Giuseppe Melchiorre Sarto to the cardinalate, who would go on to be his immediate successor, Pope Pius X in 1903. The Pope also nominated the brothers, Serafino and Vincenzo Vannutelli and the cousins Luigi and Angelo Jacobini to the Sacred College. Other noteworthy inclusions were Andrea Carlo Ferrari (later beatified in 1987) and Girolamo Maria Gotti (whom he favoured as his successor).

Of the 147 cardinals he elevated, 85 were Italian since Leo XIII nominated cardinals from beyond Europe, including the first cardinals from Australia,[65] Canada,[66] Slovenia,[67] and Armenia,[68] the latter of which would be the first Oriental selection since 1439.

In 1880, the Pope named three cardinals "in pectore", announcing them in 1882 and 1884. In 1882, he named another cardinal in pectore, announcing the name later that same year. On 30 December 1889, Leo XIII named only one cardinal whom he reserved in pectore, only announcing the name roughly six months later. In early 1893, he named another two cardinals in pectore, announcing their names in 1894 and 1895, while in April 1901 announcing the names of another two cardinals whom he had reserved in pectore in June 1899. In June 1896, Leo XIII named two other cardinals in pectore, announcing in March 1898 that both had died, hence, vacating the red hats he would have bestowed upon them.[69]

With the elevation of Newman in 1879, it was widely praised throughout the English-speaking world, not simply on the account of Newman's virtues and reputation, but on the basis that Leo XIII had a broader episcopal vision in mind than Pius IX ever did. His similar appointments of two prominent participants of the First Vatican Council, Lajos Haynald and Friedrich Egon von Fürstenberg both in 1879 was also noteworthy due to their roles in the short-lived Council. It was even alleged that Félix Antoine Philibert Dupanloup, a vocal opponent of papal infallibility like Newman, would have been elevated to the cardinalate in 1879 had he not died in October 1878.[26] Additionally, in 1884, the Polish priest and former Curial official Stefan Zachariasz Pawlicki was offered but refused an offer of elevation. Leo XIII later intended to name the Archbishop of Santiago Mariano Santiago Casanova Casanova as a cardinal in 1895, however, the Pope abandoned the idea after the Peruvian Church objected that the Archbishop of Lima was the Primate of South America and hence the one that needed to be made a cardinal. In order to avoid a conflict between Chile and Peru, the Pope abandoned the idea reluctantly.[69]

In 1897, the Pope intended to name the Archbishop of Turin Davide Riccardi as a cardinal however, the cardinal died before the promotion could take place. In 1891 and again in 1897, the Pope offered the cardinalate to Johannes Montel Edler von Treuenfels, the dean of the Sacred Rota, though he refused the honor (he refused again in 1908 when invited by Pope Pius X). In 1899, Leo XIII hoped to nominate the Dominican procurator general Hyacinthe-Marie Cormier (later beatified) to the cardinalate however, he was unable to do so because the French government did not favor a cardinal from a religious order to seek its best interests as a Curial member.[69] In 1901, he planned to name Agapito Panici as a cardinal at the next consistory, but Panici died before the nomination could take place in 1903. Allegedly, before deciding to name him, Leo XIII asked his brother Diomede to renounce his claim to the red hat, but when Agapito died in 1902, the Pope informed Diomede that he would ignore his previous missive asking him to renounce his claim to the red hat, a position that Diomede was never then given. According to witnesses, Leo XIII failed three times to invite Vincenzo Tarozzi (whose cause for beatification has since been launched) to receive the red hat. According to a conversation in 1904 between Pope Pius X and Antonio Mele-Virdis, the former is alleged to have said, "he should have been in my place".[69]

Leo XIII canonized the following saints during his pontificate:

• 8 December 1881: Clare of Montefalco (d. 1308), John Baptist de Rossi (1696–1764), Lawrence of Brindisi (d. 1619), and Benedict Joseph Labre (1748–1783)
• 15 January 1888: Seven Holy Founders of the Servite Order, Peter Claver (1581–1654), John Berchmans (1599–1621), and Alphonsus Rodriguez (1531–1617)
• 27 May 1897: Antonio Maria Zaccaria (1502–1539) and Peter Fourier (1565–1640)
• 24 May 1900: John Baptist de la Salle (1651–1719) and Rita of Cascia (1381–1457)

Leo XIII beatified several of his predecessors: Urban II (14 July 1881), Victor III (23 July 1887) and Innocent V (9 March 1898). He canonized Adrian III on 2 June 1891.

He also beatified the following:

• Giancarlo Melchiori on 22 January 1882
• Edmund Campion and Ralph Sherwin in 1886
• John Haile on 29 December 1886
• John Baptist de la Salle (whom he later canonized) on 19 February 1888
• Inés of Benigánim on 26 February 1888
• Antonio Maria Zaccaria (whom he later canonized) on 3 January 1890
• Giovanni Giovenale Ancina on 9 February 1890
• Pompilio Maria Pirrotti on 26 January 1890
• Gerard Majella on 29 January 1893
• Leopoldo Croci on 12 May 1893
• Antonio Baldinucci on 16 April 1893
• Rodolfo Acquaviva and 4 Companions on 30 April 1893
• Diego José López-Caamaño on 22 April 1894
• Bernardino Realino on 12 January 1896
• François-Régis Clet on 27 May 1900
• Ignatius Delgado y Cebrian as one of 64 Martyrs of Vietnam on 27 May 1900
• Louis Gabriel Taurin Dufresse on 27 May 1900
• John Lantrua of Triora on 27 May 1900
• Maria Maddalena Martinengo on 3 June 1900
• Dénis Berthelot of the Nativity and Redento Rodríguez of the Cross on 10 June 1900
• Jeanne de Lestonnac on 23 September 1900
• Antonio Grassi on 30 September 1900

He approved the cult of Cosmas of Aphrodisia. He beatified several of the English martyrs in 1895.[70]

Leo XIII named four individuals as Doctors of the Church:

• Cyril of Alexandria (28 July 1882) – he named him as "Doctor Incarnationis" ("Doctor of the Incarnation")
• Cyril of Jerusalem (28 July 1882)
• John of Damascus (29 August 1890)
• Bede the Venerable (13 November 1899) – he named him as "Anglorum doctor" ("Doctor of the English")

In 1901, Pope Leo XIII welcomed Eugenio Pacelli, later Pope Pius XII, on his first day of 57 years of service in the Vatican (1901–1958).

One of the first audiences that Leo XIII granted was to the professors and students of the Collegio Capranica, where in the first row knelt in front of him the young seminarian Giacomo Della Chiesa, the future Pope Benedict XV, who would reign from 1914 to 1922.

On a pilgrimage with her father and sister in 1887, Thérèse of Lisieux attended a general audience with Pope Leo XIII and asked him to allow her to enter the Carmelite order. Even though she was strictly forbidden to speak to him because she was told that it would prolong the audience too much, she wrote in her autobiography, Story of a Soul, that after she kissed his slipper and he presented his hand, instead of kissing it, she took it in her own hand and said through tears, "Most Holy Father, I have a great favor to ask you. In honor of your Jubilee, permit me to enter Carmel at the age of 15!" Leo XIII answered, "Well, my child, do what the superiors decide." Thérèse replied, "Oh! Holy Father, if you say yes, everybody will agree!" Finally, the Pope said, "Go... go... You will enter if God wills it" [italics hers]. Two guards lifted her (still on her knees in front of the Pope) by her arms and carried her to the door, where a third gave her a medal of the Pope. Shortly thereafter, the Bishop of Bayeux authorized the prioress to receive Thérèse, and in April 1888, she entered Carmel at the age of 15.

There are several versions of a story of how Leo came to compose the Prayer to Saint Michael. Various dates are given. A common account says that on the morning of 13 October 1884, Leo XIII celebrated Mass but as he finished, he turned to step down the stairs and allegedly collapsed, falling into what was originally thought to be a coma, but was rather a mystical ecstasy. As the priests and cardinals rushed to his side, Leo XIII rose and visibly shaken, brushed off his aides and rushed back towards his apartment where he immediately wrote the Prayer to Saint Michael the Archangel. Leo XIII reportedly saw a vision of demons being released from Hell, however, just as the vision ended, he saw Saint Michael charge in and drive them all back into Hell. Leo XIII mandated that the prayer be said after every Mass from that point forth.

In 1934, a German writer, Fr. Bers, tried to trace the origin of the story and declared that, though the story was widespread, nowhere could he find a trace of proof. Sources close to the institution of the prayer in 1886, including an account of a conversation with Leo XIII about his decision, say nothing of the alleged vision. Bers concluded that the story was a later invention that spread like a virus.[71]

• Chadwick, Owen. A History of the Popes 1830–1914 (2003). online Archived 24 May 2018 at the Wayback Machine pp 273–331.
• Chadwick, Owen. The Popes and European Revolution (1981) 655pp excerpt; also online Archived 26 November 2020 at the Wayback Machine
• Duffy, Eamon (1997), Saints and Sinners, A History of the Popes, Yale University Press.
• Thérèse of Lisieux (1996), Story of a Soul – The Autobiography of St. Thérèse of Lisieux, Clarke, John Clarke trans (3rd ed.), Washington, DC: ICS.
• Quardt, Robert, The Master Diplomat; From the Life of Leo XIII, Wolson, Ilya trans, New York: Alba House.
• O'Reilly, Bernard (1887), Life of Leo XIII – From An Authentic Memoir – Furnished By His Order, New York: Charles L Webster & Co.

• Ernesti, Jörg (2019), Leo XIII – Papst und Staatsmann (in German), Freiburg, Herder.
• Bäumer, Remigius (1992), Marienlexikon [Dictionary of Mary] (in German), et al, St Ottilien, Eos.
• Franzen, August; Bäumer, Remigius (1988), Papstgeschichte (in German), Freiburg: Herder.
• Kühne, Benno (1880), Papst Leo XIII [Pope Leo XIII] (in German), New York & St. Louis: C&N Benzinger, Einsideln.
• Quardt, Robert (1964), Der Meisterdiplomat [The Master Diplomat] (in German), Kevelaer, DE: Butzon & Bercker
• Schmidlin, Josef (1934), Papstgeschichte der neueren Zeit (in German), München{{citation}}: CS1 maint: location missing publisher (link).

• Regoli, Roberto (2009). "L'elite cardinalizia dopo la fine dello stato pontificio". Archivum Historiae Pontificiae. 47: 63–87. JSTOR 23565185.