Errors
by Society of St Pius X
June 24, 2026
Profession of Catholic Faith of the Society of Saint Pius X to Enlighten Souls in the Face of Modern Errors
With footnotes from Church teaching.
Letter concerning the Profession of Catholic Faith sent to the Holy Father, Pope Leo XIV.
Most Holy Father,
Most Reverend Eminences,
On the eve of the Consistory at the end of this month, and just days before the episcopal consecrations scheduled for 1 July in Écône, it seems to us that the time has come for the Priestly Society of Saint Pius X to make a full profession of Catholic Faith, which we wish to place in the hands of Your Holiness and each one of the Cardinals.
Today the Church suffers under the pressure of new forces, coming both from within and without, which push her in every possible direction, except – it seems to us – the right one. In the face of such suffering, we cannot remain indifferent.
It is not for the Society of Saint Pius X to indicate the path to follow, but rather for the two-thousand-year Tradition of the Church, faithfully guarded and transmitted by the Apostolic See through the centuries, and which many now regard, in practice, as an outdated reality, subject to perpetual development.
It is in the name of this same Tradition, and in its sole light, that we formulate today this profession of Catholic Faith in response to the chief errors and gravest dangers of our time.
We are convinced that Tradition contains all the remedies for the deepest ills afflicting the Church and the world, for which solutions are sought in vain outside of it. The immutable and integral Faith is the principle, the foundation, and the root of the salvation of souls. This Faith, contained in Tradition and taught by the constant Magisterium, constitutes the true foundation of the unity of the Church and, consequently, the necessary means of establishing union and communion among the members of the Mystical Body of Christ.
Above the changes and vicissitudes of time stands the immutable Tradition, the echo in history of eternal Truth.
We can but hope and implore that this Tradition and the purity of Faith be once again placed at the foundation of the life of the Church, so that from them an authentic regeneration may begin. It is with this intention that we pray with urgency.
We are persuaded that, in the unstable and extremely perilous context that now confronts us, the finest contribution one can offer to the universal Church is that of a sincere and integral profession of Catholic Faith.
We hope that one day this doctrinal text may serve as a basis for an honest discussion with the Holy See, in a spirit of peace, brotherhood, and charity.
The text we submit to you is not the sterile repetition of a group of nostalgics, but the necessary expression, peaceful and resolute, of our Faith.
Non enim possumus aliquid adversus veritatem sed pro veritate.
“For we can do nothing against the truth; but only for the truth.”
And according to the Psalmist, taken up by Saint Paul:
Et nos credimus propter quod et loquimur.
“We also believe, for which cause we speak.”
With thanks for the attention you will deign to give this text, we assure you of our constant prayers, for you and for the universal Church.
Menzingen, 24 June 2026, the Nativity of Saint John the Baptist
Davide Pagliarani, Superior General
+ Alfonso de Galarreta, First Assistant General
Christian Bouchacourt, Second Assistant General
+ Bernard Fellay, First Counsellor General, Former Superior General
Franz Schmidberger, Second Counsellor General, Former Superior General
Booklet, size 7" x 4", 89 pages
A Defense of Tradition Grounded in the Historical Context of the Faith
by Prof Roberto de Mattei
Cherish Catholic Tradition and its essential role in Christ's indefectible Church through the ages!
Apologia for Tradition is a powerful, well-documented defense of sacred Tradition as a solution for the modern crisis in the Church. This book demonstrates how the Catholics of history and today are united in a timeless battle to defend Tradition. A battle that stretches from the sands of the Colosseum to the cultural arena of today's post-Christian era. The book shows:
- The triumph of Tradition over persecution and heresy
- Historical examples of the Church's method of adherence to Tradition
- How in every era, Christ raised up saints to defend the Tradition of Holy Mother Church
- How evil has attempted to eradicate Tradition, especially today
In the unhappy event of a conflict between the "living Magisterium" and Tradition, the primacy can be attributed to Tradition alone, for one simple reason: Tradition, which is the "living" Magisterium considered in its universality and continuity, is infallible in itself, whereas the so-called "living" Magisterium, understood as the current preaching of the ecclesiastical hierarchy, is infallible only under certain conditions. - Roberto de Mattei
Paperback, size 9" x 6", 122 pages
by Fr Alfonso de Castro, O.F.M.
An important manual of Catholic discipline. Available for the first time in English, On the Just Punishment of Heretics is an important manual of Catholic doctrine and discipline. Author Alfonso de Castro’s scholarly contribution establishes the principles and historical precedent for identifying, distinguishing, and addressing heretics and heresy. This work is an essential tool for those wishing to defend the Faith from compromise and falsity. It is as applicable today as it was indispensable for the Catholics of the 16th century.
Book I
The first book discusses heretics, who they are, and how they ought to be admonished correctly so that they might first acknowledge their error and then return to the path of truth.
Book II
The second book focuses on those heretics who adhere to their heresies even after admonishment from Holy Mother Church. It also discusses the appropriate punishments due to such persons.
Book III
The third book shows ways to prevent heresies, including the duty of prelates and civil leaders to use their respective powers to prevent the spread of heresy. Those who ignore this duty impose upon themselves the ignominy of laxity and slothfulness.
As modern heresies and heretics continue to multiply, it is necessary to own reliable manuals that summarize, explain, and refute as many historical heresies and heretics as possible so that we might recognize and avoid their descendants in the future.
Hardbound, size 9.25" x 6.5, 1077 pages
"The synthesis of all heresies" - Pope St Pius X (Pascendi)
by Michael Davies
Developed from a lecture delivered to Pro Ecclesia et Pontifice by the late Michael Davies.
Prior to Vatican II, 80% of young people leaving Catholic schools practised the faith, today, 3% do. The much vaunted New Pentecost is seemingly no quite so awesome as the first.
This catastrophic collapse is primarily the result of the heresy of Modernism, which has seeped into the Church's blood stream like AIDs, sapping her vitality and reducing her to a shadow of her former self.
Since Vatican II, with one or two honourable exceptions, Western sees have been filled by Rome with dreary, vacuous, bog-standard Modernists. Under the leadership of these men, Christ Body in the British Isles, and elsewhere, has simply haemorrhaged away?
It is also no coincidence that the horribly sex-abuse scandals, mostly perpetrated by predatory sodomites, occurred on their watch.
To cure a disease, one must first understand it. In this booklet, Michael Davies uses his scholarship to lucidly expose the nature of this deadly virus in terms that all can understand. By Graham Moorhouse Chairman, PEEP
Paperback, size 8.25" x 5.75", 44 pages
by Fr Malachi Martin
This book focuses like a laser-beam on three key subjects: The bishops, the Papacy, and Catholic devotions. In The Deserted Vineyard, Fr. Martin:
- Explains exactly how Judas went wrong. Fr. Martin calls this error the Judas complex.
- Illustrates how many modern churchmen have fallen into the error of the Judas complex.
- Provides the defining assessment of the pontificate of Pope John Paul II.
- Demonstrates the critical importance of Catholic devotions. Fr. Martin describes the life of Catholic devotion as the essence of Catholicism.
- Shows how to obtain the benefits available from the rich treasure chest of popular devotions accumulated over the centuries.
The Deserted Vineyard is the defining work about the betrayal by modern churchmen of the Catholic religion.
Paperback, size 7" x 4.75", 60 pages
by Fr Denis Fahey, S.S.Sp
One of the most important books you could read! Fr. Fahey masterfully details the contrast between the Church's social teachings and organized naturalism, which is nothing more than Freemasonry and the work of other groups which are always striving to make what is now called "Secular Humanism" the dominant ideology ruling the world. They have succeeded to a large degree; but, by reading this book you will not only be better able to recognize their errors, you will be inspired to reverse the gains they have made and help advance the Social Reign of Christ the King!
Paperback, size 8.5" x 5.5", 156 pages
The archive of the correspondence between Archbishop Marcel Lefebvre and the Vatican concerning the episcopal consecrations.
by Fr Francois Laisney
In this book you will find a complete set of the documents exchanged between Rome and Archbishop Lefebvre in the time leading up to and immediately following his consecration of four Roman Catholic bishops on June 30, 1988.
Just as a court of law will insist upon the authentic documents to get the truth, so in this historic clash between two radically opposed views of the Catholic Church and the Catholic Faith, there is no substitute for reading the original texts of what both sides had to say.
To these texts all that has been added is narrative to connect them in their sequence and to set them in their context, with a few footnotes to uncover the issue at stake from the standpoint of the Society of Saint Pius X.
Includes: Protocol of Accord, Ecclesia Dei, Consecration Sermon of Archbishop Lefebvre, Declaration of Bishop de Castro Mayer, Media Reports, Canon Law, creation of the Fraternity of Saint Peter. Explanations by Fr. Francois Laisney.
Paperback, size 8.5" x 5.5", 277 pages
A Comparison of the Traditional and Novus Ordo Rites of the Seven Sacraments
by Daniel Graham
This book compares the texts of the Traditional rites and the Novus Ordo rites for the seven sacraments, so we can offer substantial reasons for choosing one rite over the other. The plan of the book is simple. For each sacrament, we describe patterns of changes in the texts; then, we lay the texts side by side with comments so you can see particular changes and see the patterns. Finally, we end the comparison of each sacrament by offering some conclusions.
Throughout this book, we use the term Traditional to distinguish the Roman Catholic rites before 1962. The authors of the rites promulgated after 1968 use the term Novus Ordo, translated New Order, to describe their new rites. An objective comparison of the texts clearly shows the differences. As St. Thomas Aquinas observed, "What is objectively real is objectively true." The differences in the two rites are objectively real.
Paperback, size 9" x 6", 220 pages
A Brief Summary of the Status of Tradition
In the aftermath of Pope Francis’s motu proprio Traditionis Custodes on July 16, 2021, there has been much confusion and consternation among Catholics regarding the future of the traditional Roman liturgy. Traditionis Custodes re-asserts the reformed liturgical books promulgated by Pope Paul VI in accordance with the decrees of the Second Vatican Council as the only legitimate expression of the lex orandi of the Roman Rite. In so doing, the text has marginalized the traditional liturgy, including the immemorial Latin Mass.
How should Catholics understand this turn of events? What should they expect in the future? And why is Traditionis Custodes viewed by many as a direct attack on the Church’s patrimony? These are some of the questions addressed at 16th Congress of the Courrier de Rome, held in Paris on January 15, 2022, which took this damaging document as its theme.
Through careful analysis and scholarly discussion, the talks delivered at this congress shed light on the complex and often contentious place of the traditional Latin liturgy in the modern Church.
A must read by all Catholics who wish to know the true status of Tradition.
Table of Contents
- Introduction by Fr. Bernard de Lacoste, Director of Courrier de Rome and Rector of the Seminary in Écône
- Vatican II and the New Mass: 50 Years of Conciliar Changes? by Fr. Nicolas Portail, Professor of Church History at the Institut Universitaire Saint-Pie X
- Does the Tridentine Mass Call into Question Vatican II? by Fr. Alain Lorans, Editor-in-Chief of DICI
- Does the Mass of St. Pius V Divide the Church? by Fr. Jean-Michel Gleize, Professor of Ecclesiology at the Seminary in Écône
- Traditionis custodes or Disdain for the Laity by Dominique Viain, Award-Winning Classics Scholar
- The Application of Traditionis custodes in the Dioceses by Fr. Benoît Espinasse, Editor-in-Chief of La Porte Latine
- Keep Tradition and Pass It On: by Fr. Davide Pagliarani, Superior General of the Society of Saint Pius X
Clothbound, Gilded hardcover, size 9.25" x 6", 171 pages
Nineteenth-century Catholics and the Myth of Modern Freedom
by Dr John Rao
19TH CENTURY CATHOLICS AND THE MYTH OF MODERN FREEDOM Among American Catholics, there is a certain unwillingness to see anything amiss with modern civilization as embodied in the American dream of "life, liberty, and the pursuit of happiness." Often, this is because the only alternatives to democracy we know are the much more frightening specters of socialism and communism. To many, it seems the only way to have an effective voice in the American political arena is to align ourselves with the so-called conservative "Right." Yet if we follow the logic of the "Right" today, we may wonder why people who support individual rights and freedom of conscience in the economic and political realm are so vehemently opposed to the supremacy of individual rights and freedom of conscience in the moral realm. Many Catholics give up following the logic at this point and cast their vote in favor of freedom of conscience as the most important principle - because it is the most advantageous to them at this moment.
LEARN THE TRUTH The Catholic Church, however, has never been concerned primarily with what is the most advantageous political system at a given point in history, but rather with the truth. In Removing the Blindfold, Dr. John Rao explains the conundrum that modern Catholics face in dealing with the current socio-political climate and traces the roots of this problem back to the French Revolution and the principles it espoused. He shows how most modern Catholics have embraced some form of revolutionary thought without even being aware of it, and reveals how revolutionary ideals are incompatible with Church teaching, and always have been.
Paperback, size 8.5" x 5.5", 200 pages
The Battle for Your Child's Mind
by Michael D. O'Brien
The Harry Potter series of books and movies are wildly popular. Many Christians see the books as largely if not entirely harmless. Others regard them as dangerous and misleading. In his book A Landscape with Dragons, Harry Potter critic Michael O'Brien examines contemporary children's literature and finds it spiritually and morally wanting. His analysis, written before the rise of the popular Potter books and films, anticipates many of the problems Harry Potter critics point to. A Landscape with Dragons is a controversial, yet thoughtful study of what millions of young people are reading and the possible impact such reading may have on them.
In this study of the pagan invasion of children's culture, O'Brien, the father of six, describes his own coming to terms with the effect it has had on his family and on most families in Western society. His analysis of the degeneration of books, films, and videos for the young is incisive and detailed. Yet his approach is not simply critical, for he suggests a number of remedies, including several tools of discernment for parents and teachers in assessing the moral content and spiritual impact of this insidious revolution. In doing so, he points the way to rediscovery of time-tested sources, and to new developments in Christian culture.
If you have ever wondered why a certain children's book or film made you feel uneasy, but you couldn't figure out why, this book is just what you need. This completely revised, much expanded second edition also includes a very substantial recommended reading list of over 1,000 books for kindergarten through highschool.
Paperback, size 8" x 5", 261 pages
by Archbishop Marcel Lefebvre
A popular study of the crisis in the Church written for all to understand. Covers the Mass, Sacraments, Priesthood, the New Catechisms, Ecumenism, etc., and demonstrates the new spirit in the Church which has caused doubt and confusion among the faithful. Has served as a beacon for thousands; certain to become a classic.
Paperback, 163 pages
Five Hundred Years that Split the Church and Scattered the Flock
by Diane Moczar
Here's an unabashedly Catholic history that documents scores of sustained and unprecedented assaults on our Catholic Faith these past five centuries and delineates our Church's brave response to each one.
For five hundred years, from Luther to Marx, through Darwin, Hitler, and Rousseau, wave after wave of cynical anti-Catholic men and movements have wrought havoc even worse than that of Attila the Hun and Genghis Khan, leaving our once noble Christendom a ruined city, devastated politically and spiritually, morally and intellectually.
They've ripped the heart from our culture's chest: the Catholic Faith that once gave life and strength to her body. They've wounded even the Church herself.
Celebrated Catholic historian Diane Moczar counters here with an unflinching sketch of these five woeful centuries with sound reasons for hope. For, as she demonstrates, even after five hundred years of sustained persecution, our Church has not merely survived but continues in many places to flourish.
Almost two thousand years ago, Tertullian noted that the "blood of the martyrs is the seed of the Church", a truth borne out these past five hundred years.
Time after time, as Moczar shows, persecution has not snuffed out the Faith but has brought forth great saints whose holy deeds and brave examples frustrated their persecutors by communicating to the besieged Church a vigor greater than that of her persecutors.
These pages will renew your confidence that the Church is indeed Christ acting in the world and that no matter how strong or ruthless or vicious her opponents, she will not be vanquished but will endure to the end of time.
Paperback, size 8.5" x 5.5", 256 pages
or The Triumph of the Church
by St Alphonsus M. Liguori
A history of heresies with a supplementary chapter, added by the translator, of the heresies of the 18th and 19th Centuries. In the Second Part, the Refutation of Heresies, the Holy Author comprises, in a small space, a vast amount of Theological information; in fact, there is no Heresy which cannot be refuted from it. Not alone are the usual Heresies, which we have daily to combat -- such as those opposed to the Real Presence, the Authority of the Church, the doctrine of Justification, clearly and diffusely refuted, but those abstruse heretical opinions concerning Grace, Free Will, the Procession of the Holy Ghost, the Mystery of the Incarnation, and the two Natures of Christ, and soforth, are also clearly and copiously confuted; the intricacies of Pelagianism, Calvinism, and Jansenism, are unravelled, and the true Doctrine of the Church triumphantly vindicated.
Paperback, size 8.5" x 5.5", 648 pages
Love for the Papacy & Filial Resistance to the Pope
In the History of the Church
by Prof Roberto de Mattei
In this book, Roberto de Mattei steers us perceptively through centuries of Church history concerning both the wise, and the disastrous, decisions of popes and councils: from the role of Pope Liberius in the Arian crisis to the troubled Vatican compromises with the French Third Republic; from the Ostpolitik and liturgical rupture of Paul VI to the erosion of dogmatic truths and moral absolutes under Pope Francis. In these and in many more examples de Mattei’s judgment rings true: popes have been mistaken in their political, pastoral, and even magisterial acts, and the resistance of the faithful to such acts is a duty and a cause of benefit.
Along the way we are offered an illuminating catechism in ecclesiology, the nature of the Magisterium, and the limits of papal authority. Especially helpful are de Mattei’s discussion of the hypothesis of a heretical pope, his clear explanation of the difference between filial resistance and disobedience to the Successors of the Apostles when they make heterodox pronouncements, and his ample treatment of the significance and profound implications of recent public remonstrations with the current pontificate on behalf of orthodoxy. The author’s rich historical narratives, deftly intertwined with dogmatic, moral, and canonical principles, make this work a potent resource for grappling with the current crises of the Church.
Paperback, size 8.5" x 5.5", 232 pages
Catechism of Errors
by Michael Haynes with an Introduction by Archbishop Viganò
Sixty years after the Pastoral Council, that the promotional advertising told us was to usher in a new springtime for the Church, is sufficient time for the faithful to stand back and calmly observe the glorious fruits of the work of that Council. The historical facts appear to us to belie the promises made by Pope John XXIII and others.
As Pope John Paul II said, three of the most important fruits of the Council are: the New Liturgy and sacramental rites, the New Code of Canon Law and the New Catechism. With all of these brand new and very modern(ist?) post-Conciliar alterations in the laws and teachings of the hierarchy forced upon the faithful having had its trial of sixty years, it is now time to judge these fruits objectively. Surely, even those who have collaborated, either wholeheartedly or with reservations, in the advancement of these changes must agree that a just and prudent accounting should now be made of the blessings or curses upon the Church and the world resulting from the work of the Council.
Paperback, size 8.5" x 5.5", 164 pages
by Michael Davies
Mr. Davies defends Archbishop Lefebvre and his battle for the Faith during the crucial battles of the 1970's and early 1980's. These books are full of documentation and poignant analysis. The historical value of these works, from the pen of the man who declared at the First Annual Walter Matt Memorial Dinner (January, 2004), "Archbishop Lefebvre is a Saint," cannot be overestimated.
Apologia Pro Marcel Lefebvre, Volume I - This book is certainly one of great historical value. Portrays the dramatic conflict relating to the grievances between Archbishop Lefebvre and the Vatican under Pope Paul VI. Depicts the role of one who had the foresight to recognize that he could not defend orthodoxy and at the same time accept reforms "themselves oriented towards the cult of man." Completely documented. 496 pages
Apologia Pro Marcel Lefebvre, Volume II - This volume covers the story of Archbishop Lefebvre's relations with the Vatican up to the end of 1979. The negotiations between the Archbishop and the Sacred Congregation for the Doctrine of the Faith form the principal feature of the book. 416 pages
Apologia Pro Marcel Lefebvre, Volume III - Covers 1979-1982, the beginning of the pontificate of John Paul II. Davies records many of the Holy Father's directives, how they were opposed by the Bishops, and why it was necessary for Archbishop Lefebvre and the SSPX to avoid all compromise in preserving Catholic Truth. Completes the series by considering Abp. Lefebvre within the broader perspective of the crisis in the Church. 496 pages
3 VOLUME Hardcover Set, 1,408 PAGES
Comments on the Papal Encyclicals condemning Modern Errors infecting the Church and Society