"Non possumus" is a

Latin Latin ( or ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally spoken by the Latins (Italic tribe), Latins in Latium (now known as Lazio), the lower Tiber area aroun ...

Catholic The Catholic Church (), also known as the Roman Catholic Church, is the List of Christian denominations by number of members, largest Christian church, with 1.27 to 1.41 billion baptized Catholics Catholic Church by country, worldwid ...

, religious phrase that translates as "we cannot". It originated with the martyrdom of the

Martyrs of Abitinae The Martyrs of Abitinae (or Abitinian Martyrs) were a group of 49 Christians found guilty, in 304, during the reign of the Emperor Diocletian, of having illegally celebrated Sunday worship at Abitinae, a town in the Roman province of Africa. The ...

, who were murdered in AD 304 when Roman Emperor

Diocletian Diocletian ( ; ; ; 242/245 – 311/312), nicknamed Jovius, was Roman emperor from 284 until his abdication in 305. He was born Diocles to a family of low status in the Roman province of Dalmatia (Roman province), Dalmatia. As with other Illyri ...

prohibited

Christians A Christian () is a person who follows or adheres to Christianity, a monotheistic Abrahamic religion based on the life and teachings of Jesus Christ. Christians form the largest religious community in the world. The words '' Christ'' and ''C ...

under penalty of death to possess the

Sacred Scriptures Religious texts, including scripture, are texts which various religions consider to be of central importance to their religious tradition. They often feature a compilation or discussion of beliefs, ritual practices, moral commandments and l ...

, convene on

Sunday Sunday (Latin: ''dies solis'' meaning "day of the sun") is the day of the week between Saturday and Monday. Sunday is a Christian sabbath, day of rest in most Western countries and a part of the Workweek and weekend, weekend. In some Middle Ea ...

to celebrate the

Holy Eucharist The Eucharist ( ; from , ), also called Holy Communion, the Blessed Sacrament or the Lord's Supper, is a Christian rite, considered a sacrament in most churches and an ordinance in others. Christians believe that the rite was instituted by J ...

, and erect premises for their assemblies. The phrase was not intended to express incapacity but, on the contrary, absolute moral determination to obey the

Catholic Faith The Catholic Church (), also known as the Roman Catholic Church, is the largest Christian church, with 1.27 to 1.41 billion baptized Catholics worldwide as of 2025. It is among the world's oldest and largest international instituti ...

. The full sentence of the phrase is "sine dominico non possumus" ("we cannot

ive Ive or IVE may refer to: Music * Ive (group), a South Korean girl group * I've Sound (aka "I've"), a Japanese musical group People * Ive (given name), a Croatian and Slovenian given name * Bert Ive (1875–1939), British-born Australian cinema ...

without Sunday"). It expresses the necessity of

and the

for

Christianity Christianity is an Abrahamic monotheistic religion, which states that Jesus in Christianity, Jesus is the Son of God (Christianity), Son of God and Resurrection of Jesus, rose from the dead after his Crucifixion of Jesus, crucifixion, whose ...

. Another ecclesiastic use of the phrase has been attributed to

Pope Leo the Great Pope Leo I () ( 391 – 10 November 461), also known as Leo the Great (; ), was Bishop of Rome from 29 September 440 until his death on 10 November 461. He is the first of the three Popes listed in the ''Annuario Pontificio'' with the title "the ...

, who wrote in AD 448 that "quibus viventibus non communicavimus mortuis communicare non possumus" ("we cannot hold communion in death with those who in life were not in communion with us"). Recourse to this principle has been had to justify various ecclesiastical practices, including refusal of funeral liturgies and refusal of abrogating the

ex-communication Excommunication is an institutional act of religious censure used to deprive, suspend, or limit membership in a religious community or to restrict certain rights within it, in particular those of being in Koinonia, communion with other members o ...

of decedents. Some have used it to object to

ecumenism Ecumenism ( ; alternatively spelled oecumenism)also called interdenominationalism, or ecumenicalismis the concept and principle that Christians who belong to different Christian denominations should work together to develop closer relationships ...

and general relations with non-Christians. The phrase has been vivid throughout the life of the Church, being used by pontiffs also in troubled times such as when

Pope Pius VII Pope Pius VII (; born Barnaba Niccolò Maria Luigi Chiaramonti; 14 August 1742 – 20 August 1823) was head of the Catholic Church from 14 March 1800 to his death in August 1823. He ruled the Papal States from June 1800 to 17 May 1809 and again ...

was arrested by the French troops of

Napoleon Napoleon Bonaparte (born Napoleone di Buonaparte; 15 August 1769 – 5 May 1821), later known by his regnal name Napoleon I, was a French general and statesman who rose to prominence during the French Revolution and led Military career ...

who had again invaded the

Papal States The Papal States ( ; ; ), officially the State of the Church, were a conglomeration of territories on the Italian peninsula under the direct sovereign rule of the pope from 756 to 1870. They were among the major states of Italy from the 8th c ...

in 1809. Offered various forms of compromises in exchange for his freedom, he said to his captors: "Non debemus, non possumus, non volumus" (we must not, we cannot, we will not") and accepted his exile first to Savona and then to France until 1814. In the 19th and 20th centuries, "non possumus" dominated the diplomacy of Popes

Pius IX Pope Pius IX (; born Giovanni Maria Battista Pietro Pellegrino Isidoro Mastai-Ferretti; 13 May 1792 – 7 February 1878) was head of the Catholic Church from 1846 to 1878. His reign of nearly 32 years is the longest verified of any pope in hist ...

Leo XIII Pope Leo XIII (; born Gioacchino Vincenzo Raffaele Luigi Pecci; 2March 181020July 1903) was head of the Catholic Church from 20 February 1878 until his death in July 1903. He had the fourth-longest reign of any pope, behind those of Peter the A ...

, St. Pius X,

Benedict XV Pope Benedict XV (; ; born Giacomo Paolo Giovanni Battista della Chiesa, ; 21 November 1854 – 22 January 1922) was head of the Catholic Church from 1914 until his death in January 1922. His pontificate was largely overshadowed by World War I a ...

, and

Pius XI Pope Pius XI (; born Ambrogio Damiano Achille Ratti, ; 31 May 1857 – 10 February 1939) was head of the Catholic Church from 6 February 1922 until his death in February 1939. He was also the first sovereign of the Vatican City State u ...

, especially after the

capture of Rome The Capture of Rome () occurred on 20 September 1870, as forces of the Kingdom of Italy took control of the city and of the Papal States. After a plebiscite held on 2 October 1870, Rome was officially made capital of Italy on 3 February 1871, c ...

when the

Supreme Pontiff The pope is the bishop of Rome and the visible head of the worldwide Catholic Church. He is also known as the supreme pontiff, Roman pontiff, or sovereign pontiff. From the 8th century until 1870, the pope was the sovereign or head of sta ...

became the

prisoner in the Vatican A prisoner in the Vatican (; ) or prisoner of the Vatican described the situation of the pope with respect to the Kingdom of Italy during the period from the capture of Rome by the Royal Italian Army on 20 September 1870 until the Lateran Treaty ...

and chose to limit his contact with the outside world. It is generally thought that the

Second Vatican Council The Second Ecumenical Council of the Vatican, commonly known as the or , was the 21st and most recent ecumenical council of the Catholic Church. The council met each autumn from 1962 to 1965 in St. Peter's Basilica in Vatican City for session ...

reversed this attitude. This Latin phrase is also connected with the history of

Poland Poland, officially the Republic of Poland, is a country in Central Europe. It extends from the Baltic Sea in the north to the Sudetes and Carpathian Mountains in the south, bordered by Lithuania and Russia to the northeast, Belarus and Ukrai ...

. On 8 May 1953 Polish bishops sent a formal letter to the party leaders of the communist

People's Republic of Poland The Polish People's Republic (1952–1989), formerly the Republic of Poland (1947–1952), and also often simply known as Poland, was a country in Central Europe that existed as the predecessor of the modern-day democratic Republic of Poland. ...

to declare their decisive refusal to subordinate the

Church Church may refer to: Religion * Church (building), a place/building for Christian religious activities and praying * Church (congregation), a local congregation of a Christian denomination * Church service, a formalized period of Christian comm ...

to the communist state. In retaliation, the government imprisoned their

Primate Primates is an order (biology), order of mammals, which is further divided into the Strepsirrhini, strepsirrhines, which include lemurs, galagos, and Lorisidae, lorisids; and the Haplorhini, haplorhines, which include Tarsiiformes, tarsiers a ...

, Cardinal

Stefan Wyszyński Stefan Wyszyński (3 August 1901 – 28 May 1981) was a Polish Roman Catholic prelate who served as Archbishop of Warsaw and Archbishop of Gniezno from 1948 to 1981. He previously served as Bishop of Lublin from 1946 to 1948. He was created a ...

References

{{reflist Latin religious words and phrases