Schneider is known for his
traditionalism. He has criticized clergy members who he believes do not fully adhere to the faith and instead surrender to what he calls a "cruel pagan world." In 2014, he compared them to "members of the clergy and even bishops who put grains of incense in front of the statue of the emperor or of a pagan idol or who delivered the books of the Holy Scripture to be burned." He alleged that the present Catholic Church is beset by "traitors of the Faith."
Holy Communion Schneider supports the
liturgical tradition of receiving
Holy Communion on the tongue while kneeling, which he explains as a sign of love for the
body and blood of Jesus. This is the theme of his 2008 book
Dominus Est, published in Italian, and since translated into English, German, Estonian, Lithuanian, Polish, Hungarian and Chinese. The book contains a foreword written by
Malcolm Ranjith, then the Secretary of the
Congregation for Divine Worship, currently
Archbishop of Colombo and Metropolitan head of the church in
Sri Lanka. In the book, Schneider writes that receiving Holy Communion in this way had become standard practice in the church by the 5th century and that
Pope Gregory I strongly chastised priests who refused to follow this tradition. Schneider has upheld the traditional teaching of the Catholic Church that divorce and remarriage constitute the
mortal sin of
adultery, which condition renders one ineligible to receive Holy Communion. On April 7, 2018, Schneider, along with conservative cardinals
Raymond Leo Burke and
Walter Brandmüller, participated in a conference rejecting the outline proposed by German bishops to allow divorced and civilly remarried Catholics to receive the Eucharist. Schneider spoke of the duty of popes to be "custodians" of authority.
Clergy sex abuse On August 25, 2018, Archbishop
Carlo Maria Viganò, former
apostolic nuncio to the United States, released an 11-page letter describing a series of warnings to the
Vatican regarding sexual misconduct by
Theodore McCarrick, accusing Francis of failing to act on these reports and calling on him to resign. Schneider said that there was "no reasonable and plausible cause to doubt the truth content of the document." He demanded "ruthlessness and transparency" in cleansing the church of evils, particularly "homosexual cliques and networks" in the curia that he and some others have blamed for helping to cause the abuse epidemic. Schneider called on all "cardinals, bishops and priests to renounce any compromise and any flirtation with the world."
Interreligious relations Schneider stated in a January 2013 interview that proselytizing by "false religions and sects" should be restricted in majority-Catholic counties. "When there is (a Catholic majority) then false religions and sects have not the right to make propaganda there," he said. Schneider added that this does not mean that governments can "suppress them, they can live, but (governments) cannot give them the same right to make propaganda to the detriment of Catholics." Schneider has spoken out against Muslim immigration into Europe. He stated in 2018 that heavy Muslim immigration during the 2010s was orchestrated by "international powerful political organizations...to take away from Europe its Christian and its national identity. It is meant to dilute the Christian and the national character of Europe." Schneider alleged that the
Syrian Civil War was orchestrated by international powers to stir up a migrant crisis to de-Christianize Europe and that mass immigration into Europe from Northern Africa was likewise "artificially created." During Pope Francis's visit to Kazakhstan in September 2022, Schneider criticized him for promoting a "supermarket of religions" from which people could freely choose. "This is not correct because there is only one true religion, which is the Catholic Church, founded by God himself, but commanded to all men, to all religions, to believe and accept his son Jesus Christ, the only savior," Schneider said.
Liturgy Schneider is a strong promoter of the
Tridentine Mass, or the "Traditional Latin Mass," the form of the Mass commonly offered in the Church for centuries but which largely fell out of use following the reforms of the
Second Vatican Council, and which some conservative Catholics continue to champion. In a July 2018 interview, he rebuked priests for using "a careless and superficial–almost an entertainment style" of liturgy, adding that liturgy must be conducted with "beauty and reverence." According to Schneider, "You cannot change the liturgy by the tastes of the time. The liturgy is timeless." Schneider has offered Divine Liturgy in the
Byzantine Rite numerous times, praising it as "permeated with respect, with reverence, with a supernatural spirit and adoration."
Criticism of Pope Francis and hierarchy At a theological conference in Rome in December 2010, Schneider proposed the need for "a new Syllabus" (recalling the
Syllabus of Errors of 1864 by
Pope Pius IX), in which papal teaching authority would correct erroneous interpretations of the documents of the Second Vatican Council. On June 10, 2019, Schneider, along with cardinals Burke and
Jānis Pujats, as well as Kazakh archbishops
Tomasz Peta of Astana and
Jan Paweł Lenga, published a 40-point "Declaration of Truths" claiming to reaffirm traditional church teaching. The bishops wrote that such a declaration was necessary in a time of "almost universal doctrinal confusion and disorientation." Specific passages in the declaration implicitly reply to the writings of Pope Francis. The declaration states that "the religion born of faith in Jesus Christ" is the "only religion positively willed by God," seemingly alluding to the
Document on Human Fraternity signed by Pope Francis, which stated that the "diversity of religions" is "willed by God." Following recent changes to the
Catechism of the Catholic Church to oppose
capital punishment, the declaration states that the church "did not err" in teaching that civil authorities may "lawfully exercise capital punishment" when it is "truly necessary" and to preserve the "just order of societies." In September 2019, Schneider and Burke published an 8-page letter denouncing six alleged theological errors in the working document for the
Synod of Bishops for the Pan-Amazon region, and asking that Pope Francis "confirm his brethren in the faith by an unambiguous rejection of the errors." Burke and Schneider criticized the Synod document for what they characterized as its "implicit
pantheism," support for married clergy and a greater role for women in the liturgy, and excessive openness to Amazonian pagan rituals and practices. They asked the laity and clergy to pray at least one decade of the
Rosary and to fast weekly for the rejection of such ideas over a 40-day period from September 17 to October 26. In November 2023, Schneider denounced Pope Francis's decision to remove Bishop
Joseph Strickland from his diocese. Strickland was a frequent critic of Pope Francis. "This will go down in history as a great injustice against a bishop who did only his task in a time of confusion," Schneider said. He lamented what he called an "internal persecution of faithful Catholics" while bishops and cardinals who were "publicly distorting or undermining the faith" went unpunished. Schneider was critical of the November 2025 document
Mater Populi Fidelis published by the
Dicastery for the Doctrine of the Faith, which rejected the use of the title of
Co-Redemptrix for the
Virgin Mary. He alleged that the document conflicted with centuries of Catholic theological teaching which upheld this role for Mary. Schneider maintained that it was impossible that "the Church's saints, doctors, and popes have for centuries led the faithful astray."
Credo In 2023, Schneider published
Credo: Compendium of the Catholic Faith with
Sophia Institute Press, a catechism written from a traditionalist perspective. It received an
imprimatur by Bishop
Peter Anthony Libasci of
Manchester.
Credo has received attention for its focus on issues particular to traditionalist Catholicism, especially its intended "clarification" of allegedly ambiguous statements in the documents of the Second Vatican Council and the
Catechism of the Catholic Church, for which it has been both praised and criticized. == Bibliography ==