Apologetics and Catechism
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guarded and transmitted by the Apostolic See through the centuries, and which many now regard, in practice, as an outdated reality, subject to perpetual development.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
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
Conversations With Modern Man About Christ and His Church
by Msgr Robert Hugh Benson
A curious thing happened between the time Fr. Benson lived and where mankind finds itself today. The atheistic ideologies that were then only beginning to take hold in mainstream society have now metastasized throughout the contemporary world. The subtle and conversational presentation of this book is addressed to the modern man in that context. Fr. Benson gently exposes the whispered attacks, the implied ridicule, and anti-Catholic invective of his time and answers them with the patience of a friend, a father, and a priest. This apologetic approach is interwoven with the main conversation of the book: Christ’s Life and the parallels between it and His Church.
The genius of Fr. Benson’s book Christ in the Church is that he speaks to the reader with one goal in mind. Fr. Benson wishes for the atheist, the fallen away Catholic, and the poorly catechized to simply listen to a rational explanation of the world with Christ at its center.
Fr. Robert Hugh Benson is renowned for his contributions to Catholic literature. This recently rediscovered title is a fantastic example of why his books inspire people to come to Christ and His Church. Get this book for your family and friends and help them better defend themselves and the Faith against the modern errors.
Hardcover, size 9.25" x 6.25", 231 pages
Pocket Apologetic
The Truth of the Catholic Religion Attested by Holy Scripture and Reason
by Fr J.A. Kilian
“Everyone that shall confess me before men, I will also confess him before my Father who is in heaven. But he that shall deny me before men, I will also deny him before my Father” (Mt. 10:32-33).”
In this era of disbelief any Catholic not taught how to defend the faith will surely lose it. This book provides a brief, easily-absorbed guide to the absolute bare necessities of apologetics. It gives a breakdown of Holy Scripture, the History of the Early Church, Testimonies of the Early Church Fathers, and the Rise of Protestantism.
Learn to defend these commonly attacked Catholic doctrines, sacraments and truths:
- Baptism, Confirmation, Holy Eucharist, Penance
- Extreme Unction, Holy Orders, Matrimony,
- Indulgences, Celibacy, Sacramentals,
- The Four Last Things: Death Judgment, Heaven, and Hell
- The Truth of the Catholic Religion Attested by the Writings of the Early Fathers
- A Short Accurate Account of the History of the True Religion
- The Rise of Protestantism and Historical Evidence of the Truth of Our Divine Religion
- A Few Thoughts for the Reader’s Consideration
“What is Truth?” Millions of men and women continue to ask this question since Pilate first asked it of Christ. We as Catholics must understand what we believe, why we believe it, and how to defend it. Whether you’re a cradle Catholic, a convert, a parent or a young adult - it has fallen to us to not only grow our own faith but also plant the seeds of faith in the next generation. Defend your soul and the souls of your children by giving them the knowledge to first understand and then defend our glorious Catholic Faith.
Paperback, size 6.5" x 4.25", 164 pages
by Fr Bennet Kelly, C.P.
The New St. Joseph Baltimore Catechism No. 2 contains the revised text of the Official Baltimore Catechism No. 2 in a user-friendly format and design.
Written for Grades 6, 7, and 8, this Baltimore Catechism explains Catholic doctrine with the aid of many exclusive features, including a large number of pictures to help children understand each lesson. Extensive use of Sacred Scripture demonstrates the basis of Catholic doctrine and brings it to life. The New St. Joseph Baltimore Catechism No. 2 combines a contemporary viewpoint and language with a solid time-tested exposition of Catholic Church teachings.
Also available
No. 0 The New Saint Joseph First Communion Catechism
No. 1 The New Saint Joseph Baltimore Catechism
Paperback, size 8.2" x 5.5, 264 pages
by Fr Bennet Kelly, C.P.
The catechism that you might have grown up with, that taught you about Jesus Christ and the doctrines of the Church in question and answer format with beautiful illustrations and wise simple teachings.
Especially designed for children, this catechism is as indispensible today as it was in all those years ago when it formed children to follow Our Lord Jesus Christ. Also suitable for adults who seek to know more of the Church or those who want a fine refresher course.
Written for Grades 3, 4, and 5.
Also available
No. 0 The New Saint Joseph First Communion Catechism
No. 2 The New Saint Joseph Baltimore Catechism
Paperback, size 8.2" x 5.5", 192 pages
and its Significance for Catholics
by Rev Henry Theiler, S.O. Cist.
This booklet correctly presents the teaching of the Church concerning sacramentals, specifically that of Holy water, and it likewise encourages in popular form, and from practical viewpoints to the faithful, the wholesome use of Holy Water.
Translated from its original version with a few scriptural and historical insertions by the translator.
Booklet, size 8.1" x 5.4", 62 pages, Impr 1906
by Matthew R. Plese
This book explains fasting and how it has changed over the centuries in one of the most complete compilations yet written. Unfortunately, most summaries of fasting are either inaccurate or incomplete. However, rather than being a mere academic exercise, the purpose of studying the history of fasting is ultimately to help us rediscover these more ancient practices in an attempt to better observe Our Lord and Our Blessed Mother’s call for penance and reparation for sins.
As Archbishop Fulton J. Sheen once remarked, “It is a long-established principle of the Church never to completely drop from her public worship any ceremony, object or prayer which once occupied a place in that worship.” The same may be said for matters concerning either Holy Days of Obligation or fast days. What our forefathers held sacred should remain sacred to us in an effort to preserve our catholicity not only with ourselves but with our ancestors who see God now in Heaven.
The 2nd edition features the following topics which were not covered (or covered only briefly) in the first edition, including detailed explanations of how fasting changed in other countries besides America, including Spain and the Philippines, a detailed explanation of who was exempt from fasting and/or abstinence and how those changes were documented and taught in various catechisms over the centuries. Mr. Plese also cover Easter Week food traditions, highlighting their connection with the Lenten fast, Armenian fasting and abstinence rigors, Maronite fasting guidelines, the heroic example of St. John of the Cross and the Primitive Rule of Pope Innocent IV vs. the mitigated rule approved by Pope Eugenius IV, how the time of the meal on fasting days differed (e.g., sunset for Ember Days but 3 PM for the weekly devotional fasts), and so much more.
Even priests have said that 95% of the book's content is new and was not taught to them!
Paperback, size 9" x 6", 197 pages
Translated and Introduced by Rev. H. J. Schroeder
This Council of Trent (1545-1563) spanned the pontificates of five popes and shone as a beacon to all the world, condemning errors of the Protestant Reformation and making pronouncements on a vast number of Church doctrines and disciplines.
In this volume of The Canons and Decrees of the Council of Trent, originally published in 1941, Fr. H. J. Schroeder, O.P., provides an exact translation of the texts promulgated by the council and elucidates its momentous accomplishments. Readers will find the text of the documents as here presented refreshingly clear and definitive, as characteristic of the Church's official pronouncements. Covered within are the official decrees on such elements of Catholic doctrine as:
- Transubstantiation of the Eucharist
- The nature of the Mass
- Penance
- Extreme Unction
- Matrimony as a sacrament
- Holy Orders
- Original Sin
- Veneration of saints, Relics, and Our Lady
- And far more!
Footnotes with Scriptural references are provided throughout the text, as well as internal cross-references between different parts of the council's decrees. Lovers of Church history, the development of doctrine, and Catholic truth will not want to miss this magnificent translation of one of the greatest of the 21 ecumenical councils of the Catholic Church.
Paperback, size 8.5" x 5.5", 298 pages
Texts Usually Ignored By Bible Readers
This booklet recalls how Christ's Church existed 350 years before the New Testament was under one cover and over 1400 years before it could be printed; which completely refutes the "Bible Only" theory of today's 33,800 sects. Meanwhile the Protestant Bible itself proves the marks, attributes and basic doctrines of the ancient one-faith-fold-shepherd Church of Christ.
This booklet also has answers to 25 questions on the history of the New Testament which completely refute the "Bible Only" theory.
Booklet, size 8.3" x 5.3", 36 pages
From the Baltimore Catechism
by Fr Bennet Kelly, C.P.
The New Saint Joseph First Communion Catechism contains the revised text of the official Baltimore Catechism (No. 0) in a user-friendly format and design.
Written for children in Grades 1 and 2, this book explains Catholic doctrine with the aid of many exclusive features, including many pictures to help children understand each lesson. Extensive use of Sacred Scripture demonstrates the basis of Catholic doctrine and brings it to life.
This book combines a contemporary viewpoint and language with a solid time-tested exposition of Catholic Church teachings.
Also available:
No. 1 The New Saint Joseph Baltimore Catechism
No. 2 The New Saint Joseph Baltimore Catechism
Booklet, size 8.1" x 5.3", 68 pages, Impr.
A Manual of Religion, A Catechism in Pictures
by Bp. Louis LaRavoire Morrow
193 chapters in three sections: What to Believe, What to Do, and Means of Grace.
Abundant Scriptural quotations (excellent for proving Catholic Doctrine to "Bible-Believing" Protestants). It's also an excellent tool for dealing with liberal Catholics because two subjects of utmost importance are thoroughly treated: the true nature of the Catholic Church (today denied by false ecumenism) and the Holy Sacrifice of the Mass (today obscured by the New Mass).
This catechism is known and loved by Catholics because of its timeless texts, charts, lists and graphs. Profusely and beautifully illustrated!
Hardcover, size 10.25" x 7.25", 415 pages
Explained for Young Catholics
by Fr Demetrius Manousos, O.F.M.Cap.
Explains the seven sacraments. Beautifully illustrated.
Age range from 2-10
Paperback, size 6.3" x 5.2", 28 pages, Impr
For other titles in this series please click here.
The not-so-trivial trivia game.
Keep Learning. Keep Growing. Keep the Faith.
Ultimate Catholic Trivia is a compilation of over 1,700 questions divided into 12 categories covering the Catholic Faith and culture. As the ever growing distractions of the digital era continue to overwhelm daily life, traditional “offline” games that can be played with friends and family face-to-face are making a return.
Ultimate Catholic Trivia focuses on almost every facet of the Catholic Faith, including its traditions, doctrine, art, architecture, and other cultural components. This new trivia game provides more than a dry recitation of catechetical questions by focusing instead on a wide variety of Catholic topics which will inspire players to learn more about the Catholic Church and its role in culture over the past 2,000 years.
Durable box and instructions included. 1,740 Questions
Living My Religion Series Book 4
by Msgr W. R. Kelly, LL.D., Sr Mary Imelda, S.L. and Msgr M. A. Schumacher, M.A.Book 3
Explained and correlated with Bible and Church history, this traditional catechism program was reproduced from the 1940's edition with no revisions. Based upon the questions and answers of the Baltimore Catechism, these books provide a complete, integrated, and basic course in religion for grades kindergarten through eight. The purpose is to see to it that the pupil has a clear and adequate knowledge of his holy Faith.
Syllabus and Teacher manual is also available.
Paperback, size 8.5" x 5.5", 380 pages
by St. Justin Martyr
These foundational apologetic works deliver the early‑Church’s reasoned defence of Christianity in the face of persecution, addressing pagan criticisms and explaining Christian doctrine, worship, and moral life. Written as direct appeals to the Roman authorities, the texts unite philosophical insight with scriptural fidelity and bear witness to the courage and integrity of the early Christian community.
- Examines the beliefs of early Christians regarding God, Christ, and the Holy Spirit to show the faith’s doctrinal clarity and coherence
- Defends Christian practices such as baptism and the Eucharist against accusations of immorality and atheism
- Bridges Greek philosophical tradition and Christian theology, illustrating Christianity as the fulfilment of humanity’s rational and spiritual aspirations
- Presents a compelling historical witness to the courage and sacrifice of the early Church, showing believers willing to face oppression rather than renounce their faith
- Serves as a vital resource for those studying the origins of Christian doctrine, apologetics, church history, or early patristic thought
Living My Religion Series Book 3
by Msgr W. R. Kelly, LL.D., Sr Mary Imelda, S.L. and Msgr M. A. Schumacher, M.A.Book 3
Explained and correlated with Bible and Church history, this traditional catechism program was reproduced from the 1940's edition with no revisions. Based upon the questions and answers of the Baltimore Catechism, these books provide a complete, integrated, and basic course in religion for grades kindergarten through eight. The purpose is to see to it that the pupil has a clear and adequate knowledge of his holy Faith.
Paperback, size 8.5" x 5.5", 347 pages
Living in God's Church (text)
Living My Religion Book 6
by Msgr W. R. Kelly, LL.D., Fr Edmund J. Goebel, Ph.D., Sr Mary Imelda, S.L., Fr Daniel M. Dougherty, M.A. and Msgr M. A. Schumacher, M.A.
Explained and correlated with Bible and Church history, this traditional catechism program was reproduced from the 1940’s edition with no revisions. Based upon the questions and answers of the Baltimore Catechism, these books provide a complete, integrated, and basic course in religion for grades kindergarten through eight. The purpose is to see to it that the pupil has a clear and adequate knowledge of his holy Faith.
Syllabus and Teacher manual is also available.
Paperback, sixe 8.5" x 5.5", 376 pages