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Sedeprivationism is a doctrinal position within
Traditionalist Catholicism Traditionalist Catholicism is a movement that emphasizes beliefs, practices, customs, traditions, liturgical forms, devotions and presentations of teaching associated with the Catholic Church before the Second Vatican Council (1962–1965). Tr ...
which holds that the current occupant of the
Holy See The Holy See (, ; ), also called the See of Rome, the Petrine See or the Apostolic See, is the central governing body of the Catholic Church and Vatican City. It encompasses the office of the pope as the Bishops in the Catholic Church, bishop ...
is a duly-elected
pope The pope is the bishop of Rome and the Head of the Church#Catholic Church, 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 po ...
, but lacks the authority and ability to teach or to govern unless he recants the changes brought by 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 ...
. The doctrine asserts that since this council, occupants of the See of Peter are popes ''materialiter sed non formaliter'', that is " materially but not formally". As such, sedeprivationists teach that
Pope John XXIII Pope John XXIII (born Angelo Giuseppe Roncalli; 25 November 18813 June 1963) was head of the Catholic Church and sovereign of the Vatican City State from 28 October 1958 until his death on 3 June 1963. He is the most recent pope to take ...
,
Pope Paul VI Pope Paul VI (born Giovanni Battista Enrico Antonio Maria Montini; 26 September 18976 August 1978) was head of the Catholic Church and sovereign of the Vatican City State from 21 June 1963 until his death on 6 August 1978. Succeeding John XXII ...
,
Pope John Paul I Pope John Paul I (born Albino Luciani; 17 October 1912 – 28 September 1978) was head of the Catholic Church and sovereign of the Vatican City State from 26 August 1978 until his death 33 days later. His reign is among the shortest in papal h ...
,
Pope John Paul II Pope John Paul II (born Karol Józef Wojtyła; 18 May 19202 April 2005) was head of the Catholic Church and sovereign of the Vatican City State from 16 October 1978 until Death and funeral of Pope John Paul II, his death in 2005. In his you ...
, and
Pope Benedict XVI Pope BenedictXVI (born Joseph Alois Ratzinger; 16 April 1927 – 31 December 2022) was head of the Catholic Church and sovereign of the Vatican City State from 19 April 2005 until his resignation on 28 February 2013. Benedict's election as p ...
(and presumably
Pope Francis Pope Francis (born Jorge Mario Bergoglio; 17 December 1936 – 21 April 2025) was head of the Catholic Church and sovereign of the Vatican City State from 13 March 2013 until Death and funeral of Pope Francis, his death in 2025. He was the fi ...
and
Pope Leo XIV Pope Leo XIV (born Robert Francis Prevost, September 14, 1955) has been head of the Catholic Church and sovereign of the Vatican City State since May 2025. He is the first pope to have been born in the United States and North America, the fir ...
as well) have not attained the fullness of the papacy. Sedeprivationism is held by some traditionalist Catholic groups such as the Istituto Mater Boni Consilii and Orthodox Roman Catholic Movement, among others. The doctrine of Sedeprivationism traces its origin to the Thesis of Cassiciacum of the Dominican Catholic theologian Michel-Louis Guérard des Lauriers.


Etymology

The etymology of the term sedeprivationist "means that there is a privation in the occupant of the chair of Saint Peter, i.e. something lacking." "Sedeprivationism" is composed of "'' sede''" ("seat" in
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 ...
) and "privationism" (Latin "'' privatio''", meaning "privation"), and the
suffix In linguistics, a suffix is an affix which is placed after the stem of a word. Common examples are case endings, which indicate the grammatical case of nouns and adjectives, and verb endings, which form the conjugation of verbs. Suffixes can ca ...
"ism"). American sedeprivationist Bishop Donald Sanborn, however, disagrees with the use of the name, calling it "a completely dumb name". He explained in 2009 that:


History

The doctrine of sedeprivationism was formulated by the French Dominican theologian Michel-Louis Guérard des Lauriers (1898–1988). His thesis is known as the Thesis of Cassiciacum, because it was first published in the magazine ''Cahiers de Cassiciacum'' ("Notes from Cassiciacum"), in the first issue of the magazine, in 1979. He was excommunicated in 1983. The thesis states that
John Paul II Pope John Paul II (born Karol Józef Wojtyła; 18 May 19202 April 2005) was head of the Catholic Church and sovereign of the Vatican City State from 16 October 1978 until Death and funeral of Pope John Paul II, his death in 2005. In his you ...
, like predecessors who came after
John XXIII Pope John XXIII (born Angelo Giuseppe Roncalli; 25 November 18813 June 1963) was head of the Catholic Church and sovereign of the Vatican City State from 28 October 1958 until his death on 3 June 1963. He is the most recent pope to take ...
, was Pope only materially and not formally, and so was the valid electee of the October 1978 conclave. Although he never became Pope (fully, in the sedeprivationist view), he equally has never forfeited his claim on the
papacy The pope is the bishop of Rome and the Head of the Church#Catholic Church, 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 po ...
.


Thesis of Cassiciacum

The Thesis of Cassiciacum, which asserts the position of sedeprivationism, states that the See of Peter is not obtained and must conform with one of two prescribed requirements of a legitimate papal election by the popes: # The pope must be elected legitimately by valid designated electors. That aspect designates the papal candidate as '' materially'' elected and designated candidate to the office of pope. # The newly chosen pope-elect must express his acceptance and that on giving his assent he receives from
Christ Jesus ( AD 30 or 33), also referred to as Jesus Christ, Jesus of Nazareth, and many other names and titles, was a 1st-century Jewish preacher and religious leader. He is the Jesus in Christianity, central figure of Christianity, the M ...
the ''
form Form is the shape, visual appearance, or configuration of an object. In a wider sense, the form is the way something happens. Form may also refer to: *Form (document), a document (printed or electronic) with spaces in which to write or enter dat ...
'' of the papacy: the indefectible power or authority promised to
Saint Peter Saint Peter (born Shimon Bar Yonah; 1 BC – AD 64/68), also known as Peter the Apostle, Simon Peter, Simeon, Simon, or Cephas, was one of the Twelve Apostles of Jesus and one of the first leaders of the Jewish Christian#Jerusalem ekklēsia, e ...
and his successors by which the elected candidate ''formally'' becomes pope and actually takes hold of the office of the papacy. The Thesis of Cassiciacum, as held by the Istituto Mater Boni Consilii and others, contends that both aspects are required and that if any candidate fails either one, he would not be elected to the office of pope. The Catholics adhering to the thesis hold that all claimants of the papal office from at least Paul VI to
Francis Francis may refer to: People and characters *Pope Francis, head of the Catholic Church (2013–2025) *Francis (given name), including a list of people and fictional characters * Francis (surname) * Francis, a character played by YouTuber Boogie2 ...
are invalid and do not hold the papal office except by right of designation because of a failure to receive the ''form'' of the papacy (i.e. the authority) because his ''acceptance'' is impeded by a defective intention arising from their manifest disposition of apostasy. In explaining the position of sedeprivationism, sedevacantist bishop Donald Sanborn writes:
Because the power of designation to office pertains to the purely legal and material side of authority, the Novus Ordites possess the power to legitimately designate to positions of power, until such time as this power is legally removed from them. As a result, there is a material hierarchy in place, i.e., someone legally nominated to be a pope, and others legally nominated to be bishops, and others legally nominated to be electors of popes, but none of these has any jurisdiction, and obedience is owed to none of them. Because they lack the authority, which is the form which makes them to be what they are, Ratzinger is a false pope and the bishops are false bishops. The cardinals are true electors, to the extent that they are legally nominated to be designators of the pope. But their role pertains to the material order of authority, the order of designation only.


Differences with sedevacantism

Sedeprivationism argues that since 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 ...
, the elected popes are materially popes, though they have not attained the fullness of that office due to what sedeprivationists perceive as them holding the
heresy Heresy is any belief or theory that is strongly at variance with established beliefs or customs, particularly the accepted beliefs or religious law of a religious organization. A heretic is a proponent of heresy. Heresy in Heresy in Christian ...
of
Modernism Modernism was an early 20th-century movement in literature, visual arts, and music that emphasized experimentation, abstraction, and Subjectivity and objectivity (philosophy), subjective experience. Philosophy, politics, architecture, and soc ...
. This is contrasted with the position of
sedevacantism Sedevacantism is a traditionalist Catholic movement which holds that since the 1958 death of Pius XII the occupiers of the Holy See are not valid popes due to their espousal of one or more heresies and that, for lack of a valid pope, the S ...
, which asserts a vacancy in the papal office; the term ''
sede vacante In the Catholic Church, ''sede vacante'' is the state during which a diocese or archdiocese is without a prelate installed in office, with the prelate's office being the cathedral. The term is used frequently in reference to a papal interre ...
'' means "empty chair" in reference to the See of Saint Peter. Putting it another way, whereas sedevacantists believe that heretics and other non-Catholics are prevented by divine law from holding any office or privilege in the Church, sedeprivationists do not; rather, they insist that non-Catholics are still able to retain offices or privileges such as papal elector or Cardinal.


See also

*
Independent Catholicism Independent Catholicism is an independent sacramental movement of clergy and laity who self-identify as Catholic (most often as Old Catholic or as Independent Catholic) and form "micro-churches claiming apostolic succession and valid sacr ...


Notes


References

{{Traditionalist Catholicism Traditionalist Catholicism Catholic terminology