List of Traditional Catholic Quotes

Pope St. Leo the Great meets Attila the Hun

These are some quotes from the Saints and Popes which I have come across whilst studying questions of theology. These quotes all treat of the authority of Catholic tradition, and provide authoritative support for the main thesis of traditional Catholicism, namely that tradition constitutes the rule of faith for Catholics, the standard of orthodoxy in matters of doctrine as well as discipline. I'll be adding to this list as I discover more quotes. 

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St. Irenaeus of Lyons

"Suppose there arise a dispute relative to some important question among us, should we not have recourse to the most ancient Churches with which the apostles held constant intercourse, and learn from them what is certain and clear in regard to the present question? For how should it be if the apostles themselves had not left us writings? Would it not be necessary, [in that case,] to follow the course of the tradition which they handed down to those to whom they did commit the Churches?" -- St. Irenaeus of Lyons

"What is to settle the point for us, except it be that principle of time, which rules that the authority lies with that which shall be found to be more ancient; and assumes as an elemental truth, that corruption (of doctrine) belongs to the side which shall be convicted of comparative lateness in its origin. For, inasmuch as error is falsification of truth, it must needs be that truth therefore precede error. A thing must exist prior to its suffering any casualty; and an object must precede all rivalry to itself. Else how absurd it would be...that that should be thought to be the truer position which is the later one... Such are the summary arguments which we use, when we take up arms against heretics for the faith of the gospel, maintaining both that order of periods, which rules that a late date is the mark of forgers, and that authority of churches which lends support to the tradition of the apostles; because truth must needs precede the forgery, and proceed straight from those by whom it has been handed on." -- Tertullian

"Since the Lord Jesus Christ sent the apostles to preach, (our rule is) that no others ought to be received as preachers than those whom Christ appointed; 'for no man knows the Father save the Son, and he to whomsoever the Son will reveal Him.' Nor does the Son seem to have revealed Him to any other than the apostles, whom He sent forth to preach— that, of course, which He revealed to them. Now, what that was which they preached— in other words, what it was which Christ revealed to them— can, as I must here likewise prescribe, properly be proved in no other way than by those very churches which the apostles founded in person, by declaring the gospel to them directly themselves, both vivâ voce, as the phrase is, and subsequently by their epistles. If, then, these things are so, it is in the same degree manifest that all doctrine which agrees with the apostolic churches— those moulds and original sources of the faith must be reckoned for truth, as undoubtedly containing that which the (said) churches received from the apostles, the apostles from Christ, Christ from God. Whereas all doctrine must be prejudged as false which savours of contrariety to the truth of the churches and apostles of Christ and God. It remains, then, that we demonstrate whether this doctrine of ours, of which we have now given the rule, has its origin in the tradition of the apostles, and whether all other doctrines do not ipso facto proceed from falsehood. We hold communion with the apostolic churches because our doctrine is in no respect different from theirs. This is our witness of truth." -- Tertullian

"As often as the anniversary comes round, we make offerings for the dead as birthday honours. We count fasting or kneeling in worship on the Lord's day to be unlawful. We rejoice in the same privilege also from Easter to Whitsunday. We feel pained should any wine or bread, even though our own, be cast upon the ground. At every forward step and movement, at every going in and out, when we put on our clothes and shoes, when we bathe, when we sit at table, when we light the lamps, on couch, on seat, in all the ordinary actions of daily life, we trace upon the forehead the sign. If, for these and other such rules, you insist upon having positive Scripture injunction, you will find none. Tradition will be held forth to you as the originator of them, custom as their strengthener, and faith as their observer." -- Tertullian

"Seeing there are many who think they hold the opinions of Christ, and yet some of these think differently from their predecessors, yet as the teaching of the Church, transmitted in orderly succession from the apostles, and remaining in the Churches to the present day, is still preserved, that alone is to be accepted as truth which differs in no respect from ecclesiastical and apostolica tradition." -- Origen

"Let there be no innovation; keep to what has been handed down." -- Pope Stephen I, to St. Cyrpian of Carthage

"These [perverse men], doubtless, they imitate and follow, who, despising God's tradition, seek after strange doctrines, and bring in teachings of human appointment, whom the Lord rebukes and reproves in His Gospel, saying, 'You reject the commandment of God, that you may keep your own tradition.'" -- St. Cyprian of Carthage

St. Augustine

"As to those other things which we hold on the authority, not of Scripture, but of tradition, and which are observed throughout the whole world, it may be understood that they are held as approved and instituted either by the apostles themselves, or by plenary Councils, whose authority in the Church is most useful, e.g. the annual commemoration, by special solemnities, of the Lord's passion, resurrection, and ascension, and of the descent of the Holy Spirit from heaven, and whatever else is in like manner observed by the whole Church wherever it has been established." – St. Augustine

"What is held by the whole Church, and that not as instituted by Councils, but as a matter of invariable custom, is rightly held to have been handed down by authority." -- St. Augustine

“The customs of God’s people and the institutions of our ancestors are to be considered as laws. And those who throw contempt on the customs of the Church ought to be punished as those who disobey the law of God.” – St. Augustine

"[The] mere change of custom, even though it may be of advantage in some respects, unsettles men by reason of the novelty: therefore, if it brings no advantage, it does much harm by unprofitably disturbing the Church." -- St. Augustine

“The best advice that I can give you is this: Church-traditions— especially when they do not run counter to the faith— are to be observed in the form in which previous generations have handed them down… The traditions which have been handed down should be regarded as apostolic laws." – St. Jerome

"Let us be mindful also of the sacraments of priestly public prayer, which handed down by the Apostles are uniformly celebrated in the whole world and in every Catholic Church, in order that the law of supplication may support the law of believing." -- Pope Celestine I

"The Church has not just recently been given order and statutes. They were faithfully and soundly bestowed upon it by the Fathers. nor has the faith only just been established, but it has come to us from the Lord through His disciples. May what has been preserved in the Churches from the beginning to the present day not be abandoned in our time; may what has been entrusted into our keeping not be embezzled by us. Brethren, as custodians of God's mysteries let yourselves be roused into action on seeing all this despoiled by others." -- St. Athanasius

"Our distresses are notorious, even though we leave them untold, for now their sound has gone out into all the world. The doctrines of the Fathers are despised; apostolic traditions are set at nought; the devices of innovators are in vogue in the Churches; now men are rather contrivers of cunning systems than theologians; the wisdom of this world wins the highest prizes and has rejected the glory of the cross. Shepherds are banished, and in their places are introduced grievous wolves hurrying the flock of Christ. Houses of prayer have none to assemble in them; desert places are full of lamenting crowds. The elders lament when they compare the present with the past. The younger are yet more to be compassionated, for they do not know of what they have been deprived." – St. Basil the Great

St. Basil the Great

"Persecution has come upon us, right honorable brethren, and persecution in the severest form. Shepherds are persecuted that their flocks may be scattered. And the worst of all is that those who are being treated ill cannot accept their sufferings in proof of their testimony, nor can the people reverence the athletes as in the army of martyrs, because the name of Christians is applied to the persecutors. The one charge which is now sure to secure severe punishment is the careful keeping of the traditions of the Fathers." – St. Basil the Great

“Of the beliefs and practices whether generally accepted or publicly enjoined which are preserved in the Church some we possess derived from written teaching; others we have received delivered to us in a mystery by the tradition of the apostles; and both of these in relation to true religion have the same force. And these no one will gainsay—no one, at all events, who is even moderately versed in the institutions of the Church. For were we to attempt to reject such customs as have no written authority, on the ground that the importance they possess is small, we should unintentionally injure the Gospel in its very vitals; or, rather, should make our public definition a mere phrase and nothing more.” – St. Basil the Great

"[Paul commands:] 'Therefore, brethren, stand fast and hold the Traditions which you have been taught, whether by word or by our letter.' From this it is clear that they did not hand down everything by letter, but there is much also that was not written. Like that which was written, the unwritten too is worthy of belief. So let us regard the Tradition of the Church also as worthy of belief. Is it a Tradition? Seek no further." -- St. John Chrysostom

"For nothing so much disturbs the mind, though it be done for some beneficial purpose, as to innovate and introduce strange things, and most of all when this is done in matters relating to divine worship and the glory of God." -- St. John Chrysostom

"Let no approach to your ears be thrown open to the pernicious plans of undermining, let no pledge of revising any of the old definitions be granted, because, as it must be repeated very often, what has deserved to be cut away with the sharp edge of the evangelical pruninghook by apostolic hands with the approval of the universal Church, cannot acquire the strength for a rebirth nor is it able to return to the fruitful shoot of the master's vine, because it is evident that it has been destined to eternal fire. Thus, finally, the machinations of all heresies laid down by decrees of the Church are never allowed to renew the struggles of their crushed attack." -- Pope Simplicius

"What, pray, permits us to abrogate what has been condemned by the venerable Fathers, and to reconsider the impious dogmas that have been demolished by them? Why is it, therefore, that we take such great precautions lest any dangerous heresy, once driven out, strive anew to come [up] for examination, if we argue that what has been known, discussed, and refuted of old by our elders ought to be restored? Are we not ourselves offering, which God forbid, to all the enemies of the truth an example of rising again against ourselves, which the Church will never permit? Where is it that it is written: Do not go beyond the limits of your fathers [Prov. 22:28], and: Ask your fathers and they will tell you, and your elders will declare unto you [Deut. 32:7]? Why, accordingly, do we aim beyond the definitions of our elders, or why do they not suffice for us? If in our ignorance we desire to learn something, how every single thing to be avoided has been prescribed by the orthodox fathers and elders, or everything to be adapted to Catholic truth has been decreed, why are they not approved by these? Or are we wiser than they, or shall we be able to stand constant with firm stability, if we should undermine those [dogmas] which have been established by them?" -- Pope Gelasius I

St. Vincent of Lerins

"I have often then inquired earnestly and attentively of very many men eminent for sanctity and learning, how and by what sure and so to speak universal rule I may be able to distinguish the truth of Catholic faith from the falsehood of heretical pravity; and I have always, and in almost every instance, received an answer to this effect: That whether I or any one else should wish to detect the frauds and avoid the snares of heretics as they rise, and to continue sound and complete in the Catholic faith, we must, the Lord helping, fortify our own belief in two ways; first, by the authority of the Divine Law, and then, by the Tradition of the Catholic Church." -- St. Vincent of Lerins

"Moreover, in the Catholic Church itself, all possible care must be taken, that we hold that faith which has been believed everywhere, always, by all. For that is truly and in the strictest sense Catholic, which, as the name itself and the reason of the thing declare, comprehends all universally. This rule we shall observe if we follow universality, antiquity, consent. We shall follow universality if we confess that one faith to be true, which the whole Church throughout the world confesses; antiquity, if we in no wise depart from those interpretations which it is manifest were notoriously held by our holy ancestors and fathers; consent, in like manner, if in antiquity itself we adhere to the consentient definitions and determinations of all, or at the least of almost all priests and doctors." -- St. Vincent of Lerins

"What then will a Catholic Christian do, if a small portion of the Church have cut itself off from the communion of the universal faith? What, surely, but prefer the soundness of the whole body to the unsoundness of a pestilent and corrupt member? What, if some novel contagion seek to infect not merely an insignificant portion of the Church, but the whole? Then it will be his care to cleave to antiquity, which at this day cannot possibly be seduced by any fraud of novelty. But what, if in antiquity itself there be found error on the part of two or three men, or at any rate of a city or even of a province? Then it will be his care by all means, to prefer the decrees, if such there be, of an ancient General Council to the rashness and ignorance of a few. But what, if some error should spring up on which no such decree is found to bear? Then he must collate and consult and interrogate the opinions of the ancients, of those, namely, who, though living in various times and places, yet continuing in the communion and faith of the one Catholic Church, stand forth acknowledged and approved authorities: and whatsoever he shall ascertain to have been held, written, taught, not by one or two of these only, but by all, equally, with one consent, openly, frequently, persistently, that he must understand that he himself also is to believe without any doubt or hesitation." -- St. Vincent of Lerins

"True piety admits no other rule than that whatsoever things have been faithfully received from our fathers the same are to be faithfully consigned to our children; and that it is our duty, not to lead religion whither we would, but rather to follow religion whither it leads; and that it is the part of Christian modesty and gravity not to hand down our own beliefs or observances to those who come after us, but to preserve and keep what we have received from those who went before us." -- St. Vincent of Lerins

"But some one will say, perhaps, Shall there, then, be no progress in Christ's Church? Certainly; all possible progress. For what being is there, so envious of men, so full of hatred to God, who would seek to forbid it? Yet on condition that it be real progress, not alteration of the faith. For progress requires that the subject be enlarged in itself, alteration, that it be transformed into something else. The intelligence, then, the knowledge, the wisdom, as well of individuals as of all, as well of one man as of the whole Church, ought, in the course of ages and centuries, to increase and make much and vigorous progress; but yet only in its own kind; that is to say, in the same doctrine, in the same sense, and in the same meaning." -- St. Vincent of Lerins

"For who does not know, or does not advert to the fact, that what was given to the Roman Church by Peter, Prince of the Apostles, and is preserved even to this day, is what should be observed by all? Nor should anything be added, or anything unauthorized be introduced, nor should an exemplar be looked for elsewhere." – Pope Innocent I

Pope Leo the Great

“Teach nothing new, but instill into all men's breasts those things which the Fathers of revered memory have with harmony of statement taught… Preach nothing else than what we received from our forefathers… Accordingly, both in the rule of faith and in the observance of discipline, let the standard of antiquity be maintained throughout.” – Pope Leo I

"A small thing is not small when it leads to something great; and it is no small matter to forsake the ancient tradition of the Church which was upheld by all those who were called before us, whose conduct we should observe, and whose faith we should imitate... The tradition of the Church is not only passed on in written documents, but has also been given in unwritten form... What is the origin of the three immersions at baptism, or praying toward the east, or the manner in which we celebrate the eucharist? Therefore the holy apostle Paul says: "So then, brethren, stand firm and hold to the traditions which you were taught by us, either by word of mouth or by letter" (II Thess. 2: 15)." -- St. John Damascus

"We confess that (we) hold and declare the faith given from the beginning by the great God and our Savior Jesus Christ to the Holy Apostles, and preached by them in the whole world; which the sacred Fathers both confessed and explained, and handed down to the holy churches..." -- The Second Council of Constantinople

"If anyone in word and mind does not properly and truly confess according to the holy Fathers all even to the last portion that which has been handed down and preached in the holy, Catholic, and apostolic Church of God...let him be anathema." -- Pope Martin I, The Lateran Council (649)

"Those therefore who after the manner of wicked heretics dare to set aside ecclesiastical traditions, and to invent any kind of novelty, or to reject any of those things entrusted to the Church, or who wrongfully and outrageously devise the destruction of any of those traditions enshrined in the Catholic Church, are to be punished thus: if they are bishops, we order them to be deposed, but if they are monks or laypersons, we command them to be excluded from the community... If anyone rejects any ecclesiastical tradition, whether written or unwritten, let him be anathema." -- The Second Council of Nicea

"Therefore we profess to keep and guard the rules which have been handed down for the holy, Catholic and Apostolic Church… guiding by these both our own life and morals and also the whole group of priests, but also all those who are known by the name Christian… [For] Paul, the great apostle, openly gave warning to hold indeed the traditions which we have received either through the word or through the epistle of the Saints who have previously been distinguished." -- The Fourth Council of Constantinople

"It is necessary to obey a Pope in all things as long as he does not go against the universal customs of the Church, but should he go against the universal customs of the Church, he need not be followed.” -- Pope Innocent III

"'One faith,' St. Paul writes (Eph. 4:5). Hold most firmly that our faith is identical with that of the ancients. Deny this, and you dissolve the unity of the Church ... We must hold this for certain, namely: that the faith of the people at the present day is one with the faith of the people in past centuries. Were this not true, then we would be in a different church than they were in and, literally, the Church would not be One." -- St. Thomas Aquinas

"The Apostles, led by the inward instinct of the Holy Ghost, handed down to the churches certain instructions which they did not put in writing, but which have been ordained, in accordance with the observance of the Church as practiced by the faithful as time went on. Wherefore the Apostle says (2 Thessalonians 2:14): "Stand fast; and hold the traditions which you have learned, whether by word"--that is by word of mouth--"or by our epistle"--that is by word put into writing." -- St. Thomas Aquinas

"Even as he would be guilty of falsehood who would, in the name of another person, proffer things that are not committed to him, so too does a man incur the guilt of falsehood who, on the part of the Church, gives worship to God contrary to the manner established by the Church or divine authority, and according to ecclesiastical custom." -- St. Thomas Aquinas

"The custom of the Church has very great authority and ought to be jealously observed in all things." -- St. Thomas Aquinas

St. Thomas Aquinas

"Human law is rightly changed, in so far as such change is conducive to the common weal. But, to a certain extent, the mere change of law is of itself prejudicial to the common good: because custom avails much for the observance of laws, seeing that what is done contrary to general custom, even in slight matters, is looked upon as grave. Consequently, when a law is changed, the binding power of the law is diminished, in so far as custom is abolished. Wherefore human law should never be changed, unless, in some way or other, the common weal be compensated according to the extent of the harm done in this respect. Such compensation may arise either from some very great and very evident benefit conferred by the new enactment; or from the extreme urgency of the case, due to the fact that either the existing law is clearly unjust, or its observance extremely harmful." -- St. Thomas Aquinas

“It is absurd, and a detestable shame, that we should suffer those traditions to be changed which we have received from the fathers of old." – The Decretals, cited by St Thomas Aquinas

"The body of Christ is truly confected in both unleavened and leavened wheat bread, and priests should confect the body of Christ in either, that is, each priest according to the custom of his western or eastern church." -- The Council of Florence

"[The holy, ecumenical and general Council of Trent] also clearly perceives that these truths and rules are contained in the written books and in the unwritten traditions, which, received by the Apostles from the mouth of Christ Himself, or from the Apostles themselves, the Holy Ghost dictating, have come down to us, transmitted as it were from hand to hand. Following, then, the examples of the orthodox Fathers, it receives and venerates with a feeling of piety and reverence all the books both of the Old and New Testaments, since one God is the author of both; also the traditions, whether they relate to faith or to morals, as having been dictated either orally by Christ or by the Holy Ghost, and preserved in the Catholic Church in unbroken succession." -- The Council of Trent

“If anyone says that the received and approved rites of the Catholic Church, accustomed to be used in the administration of the sacraments, may be despised or omitted by the ministers without sin and at their pleasure, or may be changed by any pastor of the churches to other new ones, let him be anathema.” – The Council of Trent

"And since it is becoming that holy things be administered in a holy manner, and of all things this sacrifice is the most holy, the Catholic Church, to the end that it might be worthily and reverently offered and received, instituted many centuries ago the holy canon, which is so free from error that it contains nothing that does not in the highest degree savor of a certain holiness and piety and raise up to God the minds of those who offer. For it consists partly of the very words of the Lord, partly of the traditions of the Apostles, and also of pious regulations of holy pontiffs." -- The Council of Trent

"And since the nature of man is such that he cannot without external means be raised easily to meditation on divine things, holy mother Church has instituted certain rites, namely, that some things in the mass be pronounced in a low tone and others in a louder tone. She has likewise, in accordance with apostolic discipline and tradition, made use of ceremonies, such as mystical blessings, lights, incense, vestments, and many other things of this kind, whereby both the majesty of so great a sacrifice might be emphasized and the minds of the faithful excited by those visible signs of religion and piety to the contemplation of those most sublime things which are hidden in this sacrifice." -- The Council of Trent

"[Priests must not] make use of rites or ceremonies and prayers in the celebration of masses other than those that have been approved by the Church and have been received through frequent and praiseworthy usage." -- The Council of Trent

"I most firmly admit and embrace the apostolic and ecclesiastical traditions and other observances and constitutions of the Church…I also receive and admit the accepted and approved ceremonies of the Catholic Church in the solemn administration of the aforesaid sacraments." -- The Tridentine Profession of Faith

The Council of Trent

"The true Church is also to be known from Her origin, which She derives under the law of grace from the Apostles; for Her doctrines are neither novel nor of recent origin, but were delivered of old by the Apostles and disseminated throughout the world." – Catechism of the Council of Trent

"It behooves us unanimously and inviolably to observe the ecclesiastical traditions, whether codified or simply retained by the customary practice of the Church." – St. Peter Canisius

"These ceremonies which are used in the administration of the Sacraments, each of which we receive as delivered and entrusted to us through the hands of the fathers, must especially be retained and observed with great devotion." -- St. Peter Canisius

“[Our Pastoral solicitude] induces us to earnestly protect and preserve in everything and especially in the sacred rites of the Church the best and old norm.” – Pope Clement VIII

“If there is anything Divine among man's possessions which might excite the envy of the citizens of Heaven (could they ever be swayed by such a passion), this is undoubtedly the Most Holy Sacrifice of the Mass, by means of which men, having before their eyes and taking into their hands the very Creator of Heaven and earth, experience, while still on earth, a certain anticipation of Heaven. How keenly then, must mortals strive to preserve and protect this inestimable privilege with all due worship and reverence and be ever on their guard lest their negligence offend the angels who vie with them in eager adoration!” – Pope Urban VIII

"The proposition of the synod by which it shows itself eager to remove the cause through which, in part, there has been induced a forgetfulness of the principles relating to the order of the liturgy, "by recalling it (the liturgy) to a greater simplicity of rites, by expressing it in the vernacular language, by uttering it in a loud voice"; as if the present order of the liturgy, received and approved by the Church, had emanated in some part from the forgetfulness of the principles by which it should be regulated,--rash, offensive to pious ears, insulting to the Church, favorable to the charges of heretics against it." -- Pope Pius VI

"It is most certain that discipline cannot vary temerariously and capriciously, since the two greatest luminaries of the Catholic Church, Saint Augustine and St. Thomas Aquinas, openly teach that matters regarding discipline must not vary, except when required by necessity or some great usefulness; it being the case that changing a custom, even when that redounds to some benefit, nevertheless, by the novelty itself, is disturbing to people, and there must not be a change (as the same Saint Thomas adds) 'unless, in some way or other, the common weal be compensated according to the extent of the harm done in this respect.' Then it is therefore unthinkable that the Roman Pontiffs have ever corrupted discipline, but on the contrary, with the authority of God conferred on them for the building up of the Church, they have always sought to improve it and make it more amenable." -- Pope Pius VI

"[We cannot refrain from indication those priests] who, taken in by novelty, do not fear to undervalue the sacred rites and to criticize the venerable usages of the Church, nor spare any effort to induce you, Venerable Brother, to publish a new Ritual that will satisfy their desires. But, conscious of your duty, watch constantly over the institutions of the ancients and never allow your clergy to depart from any prescription of the Ritual of the Holy Roman Church or from any rule that may have been inserted in any Ritual you use, provided that that Ritual be ancient and approved by the lawful authority." -- Pope Gregory XVI

"That rule must be absolutely observed which states that, except for the most serious reasons and with the Apostolic See, no innovations are to be introduced into the holy rites of the liturgy." – Pope Gregory XVI

“For many years there has been growing and spreading in this country the very false opinion, the result of the impious and absurd system of indifferentism, which holds that the Christian religion is capable of continually perfecting itself. And since the champions of this false opinion hesitate to apply this pretended perfectibility to the truths of faith, they do so to the external administration and discipline of the Church. And to give credit to their error they employ, for the most part not without inconsistency and fraud, the authority of Catholic theologians who, on occasion, establish this distinction between doctrine and discipline: that discipline is subject to change, doctrine remains always the same and is not subject to any modification. Once this is laid down, they state without any hesitation that on many points the discipline, the government, and the forms of external worship in use in the Church are no longer suitable to the character of our times, and that what is harmful to the progress and prosperity of the Catholic religion must be changed, (which is possible) without the teaching of faith and morals suffering any harm. Thus, under color of religious zeal and behind the mask of piety they introduce innovations, project reforms, devise a “regeneration” of the Church… Moreover, without realizing it, or pretending that they do not realize it, they are in direct contradiction to sound doctrine which they say they wish to reestablish and protect. For in fact, when they pretend that all the forms of the Church without distinction can be changed, are they not subjecting to this change those points of discipline which have their foundation in the divine law itself, which are joined to doctrines of faith by so close a bond that the rule of faith determines the rule of action?” – Pope Gregory XVI

"We are here speaking in open disapproval of that false system of philosophy, not so long ago introduced, by which, because of an extended and unbridled desire of novelty, truth is not sought where it truly resides, and, with a disregard for the holy and apostolic traditions, other vain, futile, uncertain doctrines, not approved by the Church are accepted as true, on which very vain men mistakenly think that truth itself is supported and sustained." -- Pope Gregory XVI

"To use the words of the fathers of Trent, it is certain that the Church 'was instructed by Jesus Christ and His Apostles and that all truth was daily taught it by the inspiration of the Holy Spirit.' Therefore, it is obviously absurd and injurious to propose a certain 'restoration and regeneration' for her as though necessary for her safety and growth, as if she could be considered subject to defect or obscuration or other misfortune. Indeed these authors of novelties consider that a 'foundation may be laid of a new human institution,' and what Cyprian detested may come to pass, that what was a divine thing 'may become a human church.' Let those who devise such plans be aware that, according to the testimony of St. Leo, 'the right to grant dispensation from the canons is given' only to the Roman Pontiff. He alone, and no private person, can decide anything 'about the rules of the Church Fathers.' As St. Gelasius writes: 'It is the papal responsibility to keep the canonical decrees in their place and to evaluate the precepts of previous popes so that when the times demand relaxation in order to rejuvenate the churches, they may be adjusted after diligent consideration.'" -- Pope Gregory XVI

"By divine and Catholic faith all those things are to be believed which are contained in the word of God as found in Scripture and tradition, and which are proposed by the Church as matters to be believed as divinely revealed, whether by her solemn judgment or in her ordinary and universal magisterium." -- The First Vatican Council

"For the doctrine of the faith which God has revealed is put forward not as some philosophical discovery capable of being perfected by human intelligence, but as a divine deposit committed to the spouse of Christ to be faithfully protected and infallibly promulgated. Hence, too, that meaning of the sacred dogmas is ever to be maintained which has once been declared by Holy mother Church, and there must never be any abandonment of this sense under the pretext or in the name of a more profound understanding. May understanding, knowledge and wisdom increase as ages and centuries roll along, and greatly and vigorously flourish, in each and all, in the individual and the whole Church: but this only in its own proper kind, that is to say, in the same doctrine, the same sense, and the same understanding." -- The First Vatican Council

"If anyone says that it is possible that at some time, given the advancement of knowledge, a sense may be assigned to the dogmas propounded by the Church which is different from that which the Church has understood and understands: let him be anathema." -- The First Vatican Council

Vatican I

"The Holy Spirit was promised to the successors of Peter not so that they might, by his revelation, make known some new doctrine, but that, by his assistance, they might religiously guard and faithfully expound the revelation or deposit of faith transmitted by the apostles." -- The First Vatican Council

"The Roman Pontiff can, and ought to, reconcile himself, and come to terms with progress, liberalism and modern civilization." -- Condemned by Pope Pius IX

"For the Church of Christ, watchful guardian that she is, and defender of the dogmas deposited with her, never changes anything, never diminishes anything, never adds anything to them; but with all diligence she treats the ancient documents faithfully and wisely; if they really are of ancient origin and if the faith of the Fathers has transmitted them, she strives to investigate and explain them in such a way that the ancient dogmas of heavenly doctrine will be made evident and clear, but will retain their full, integral, and proper nature, and will grow only within their own genus - that is, within the same dogma, in the same sense and the same meaning." -- Pope Pius IX

"These enemies of divine revelation extol human progress to the skies, and with rash and sacrilegious daring would have it introduced into the Catholic religion as if this religion were not the work of God but of man, or some kind of philosophical discovery susceptible of perfection by human efforts."-- Pope Pius IX

“…The Roman Pontiffs have always…held that all those rites should be preserved which deviate neither from accuracy in matters of faith, nor from what is fitting.” – Pope Pius IX

"There prevailed a false opinion against the old school, and against the teaching of those supreme doctors, whom the universal Church venerates because of their admirable wisdom and sanctity of life. By this false opinion the authority of the Church itself is called into danger, especially since the Church, not only through so many continuous centuries has permitted that theological science be cultivated according to the method and the principles of these same Doctors, sanctioned by the common consent of all Catholic schools, but it (the Church) also very often extolled their theological doctrine with the highest praises, and strongly recommended it as a very strong buttress of faith and a formidable armory against its enemies.... For, even if it were a matter concerning that subjection which is to be manifested by an act of divine faith, nevertheless, it would not have to be limited to those matters which have been defined by express decrees of the ecumenical Councils, or of the Roman Pontiffs and of this See, but would have to be extended also to those matters which are handed down as divinely revealed by the ordinary teaching power of the whole Church spread throughout the world, and therefore, by universal and common consent are held by Catholic theologians to belong to faith...It is also necessary [for Catholics] to subject themselves...to those forms of doctrine which are held by the common and constant consent of Catholics as theological truths and conclusions, so certain that opinions opposed to these same forms of doctrine, although they cannot be called heretical, nevertheless deserve some theological censure." -- Pope Pius IX

"The sacred rites, although not instituted specifically for proving the truth of the dogmas of the Catholic Faith incontrovertibly, are effectively the living voice of Catholic Truth, the oft-sounded expression of it. For that very reason the true Church of Christ, even as she shows great zeal to guard inviolate those forms of divine worship - since they are hallowed and are not to be changed - sometimes grants or permits something novel in the performance of them in certain instances. This she does especially when they are in conformity with their venerable antiquity." – Pope Leo XIII

“For what concerns diversity of rites in the sacred liturgy, the Apostolic See has always made its position clear: not only it does not condemn diversity, but it eagerly and willingly grants to each nation the right to keep and preserve the legitimate customs and traditions of its forbears.” – Pope Leo XIII

"They knew only too well the intimate bond which unites faith with worship, 'the law of belief with the law of prayer,' and so, under the pretext of restoring it to its primitive form, they corrupted the order of the liturgy in many respects to adapt it to the errors of the Innovators." – Pope Leo XIII

"It is not the part of prudence to neglect that which antiquity in its long experience has approved and which is also taught by apostolic authority." -- Pope Leo XIII

"[T]hey [the apostles] neither abandoned the Jewish rites themselves, nor obliged any others to do so who were used to them. Custom was quite a sufficient reason for retaining them; every Christian was to remain in the state in which he was called… Now from this obedience to the Jewish law, enjoined and displayed by Our Blessed Lord and His Apostles, we learn the great importance of retaining those religious forms to which we are accustomed, even though they are in themselves indifferent, or not of Divine origin… Granting that the forms are not immediately from God, still long use has made them divine to us; for the spirit of religion has so penetrated and quickened them, that to destroy them is, in respect to the multitude of men, to unsettle and dislodge the religious principle itself. In most minds usage has so identified them with the notion of religion, that the one cannot be extirpated without the other. Their faith will not bear transplanting…In these times especially, we should be on our guard against those who hope, by inducing us to lay aside our forms, at length to make us lay aside our Christian hope altogether." -- Blessed John Henry Cardinal Newman

Pope Pius X

"They [the Modernists] recognise that the three chief difficulties for them are scholastic philosophy, the authority of the fathers and tradition, and the magisterium of the Church, and on these they wage unrelenting war... They exercise all their ingenuity in diminishing the force and falsifying the character of tradition, so as to rob it of all its weight...The Modernists pass the same judgment on the most holy Fathers of the Church as they pass on tradition; decreeing, with amazing effrontery that, while personally most worthy of all veneration, they were entirely ignorant of history and criticism, for which they are only excusable on account of the time in which they lived." -- Pope Pius X

"It is impossible to approve in Catholic publications of a style inspired by unsound novelty which seems to deride the piety of the faithful and dwells on the introduction of a new order of Christian life, on new directions of the Church, on new aspirations of the modern soul, on a new vocation of the clergy, on a new Christian civilisation." - Pope Pius X

"Far, far from the clergy be the love of novelty!" -- Pope Pius X

"I accept with sincere belief the doctrine of faith as handed down to us from the Apostles by the orthodox Fathers, always in the same sense and with the same interpretation." – Pope St. Pius X

"The true friends of the people are neither revolutionaries, nor innovators, but traditionalists." – Pope St. Pius X

"The organic constitution of the Church is not immutable; but Christian society, just as human society, is subject to perpetual evolution.'" -- Condemned by Pope Pius X

"Nor do We merely desire that Catholics should shrink from the errors of Modernism, but also from the tendencies or what is called the spirit of Modernism. Those who are infected by that spirit develop a keen dislike for all that savours of antiquity and become eager searchers after novelties in everything: in the way in which they carry out religious functions, in the ruling of Catholic institutions, and even in private exercises of piety. Therefore it is Our will that the law of our forefathers should still be held sacred: 'Let there be no innovation; keep to what has been handed down.' In matters of faith that must be inviolably adhered to as the law; it may however also serve as a guide even in matters subject to change, but even in such cases the rule would hold: 'Old things, but in a new way.'" – Pope Benedict XV

“Because it is the supreme arbiter of liturgical law, it has ever been the most urgent concern of this Apostolic See to maintain the sacred rites of the Catholic Church in all their integrity, of, if perchance they have deteriorated, to restore them to their former purity. This care is a necessary consequence of the pastoral office confided to the Roman See, to guard with vigilance ‘that exterior worship of God may be accomplished with due reverence, that the sacred mysteries may be celebrated in such a way as to contribute to the great edification of the faithful by exciting piety and stimulating devotion’… The Roman Pontiffs not only have never repudiated those sacred rites, whose antiquity should guarantee respect, so long as they maintain the obedience due to the Holy See with the unity of faith; they have also desired to see these rites reverently preserved and  exactly performed in every way not opposed to or another new law and disposition made by the Apostolic See, to which, it is clear, every rite owes obedience, as to the sovereign Teacher.” – Pope Benedict XV

"For the teaching authority of the Church, which in the divine wisdom was constituted on earth in order that revealed doctrines might remain intact forever, and that they might be brought with ease and security to the knowledge of men, and which is daily exercised through the Roman Pontiff and the Bishops who are in communion with him, has also the office of defining, when it sees fit, any truth with solemn rites and decrees, whenever this is necessary either to oppose the errors or the attacks of heretics, or more clearly and in greater detail to stamp the minds of the faithful with the articles of sacred doctrine which have been explained. But in the use of this extraordinary teaching authority no newly invented matter is brought in, nor is anything new added to the number of those truths which are at least implicitly contained in the deposit of Revelation, divinely handed down to the Church: only those which are made clear which perhaps may still seem obscure to some, or that which some have previously called into question is declared to be of faith." -- Pope Pius XI

"The Liturgy is indeed a sacred thing, since by it we are raised to God and united to Him, thereby professing our faith and our deep obligation to Him for the benefits we have received and the help of which we stand in constant need. There is thus a close connection between dogma and the sacred Liturgy, and between Christian worship and the sanctification of the faithful. Hence Pope Celestine I saw the standard of faith expressed in the sacred formulae of the Liturgy. 'The rule of our faith', he says, 'is indicated by the law of our worship...' No wonder, then, that the Roman Pontiffs have been so solicitous to safeguard and protect the Liturgy. They have used the same care in making laws for the regulation of the Liturgy, in preserving it from adulteration, as they have in giving accurate expression to the dogmas of the faith." – Pope Pius XI

“The Church is without question a living organism, and as an organism, in respect of the sacred liturgy also, she grows, matures, develops, adapts and accommodates herself to temporal needs and circumstances, provided only that the integrity of her doctrine be safeguarded. This notwithstanding, the temerity and daring of those who introduce novel liturgical practices, or call for the revival of obsolete rites out of harmony with prevailing laws and rubrics, deserve severe reproof. It has pained Us grievously to note, Venerable Brethren, that such innovations are actually being introduced, not merely in minor details but in matters of major importance as well. We instance, in point of fact, those who make use of the vernacular in the celebration of the august eucharistic sacrifice; those who transfer certain feast-days -- which have been appointed and established after mature deliberation -- to other dates; those, finally, who delete from the prayerbooks approved for public use the sacred texts of the Old Testament, deeming them little suited and inopportune for modern times.” – Pope Pius XII

"It is easy to conclude...how carefully the Apostolic See watched over the full presentation of the Ruthenian rite as far as the entire Ruthenian community and single individuals were concerned. However, let no one wonder whether the same Holy See, although always safeguarding everything essential to the rites and ceremonies of the Ruthenian Church, allowed or provisionally approved of some minor changes due to the circumstances of the particular times." -- Pope Pius XII
 

Pope Pius XII

"Hence to neglect, or to reject, or to devalue so many and such great resources which have been conceived, expressed and perfected so often by the age-old work of men endowed with no common talent and holiness, working under the vigilant supervision of the holy magisterium and with the light and leadership of the Holy Ghost in order to state the truths of the faith ever more accurately, to do this so that these things may be replaced by conjectural notions and by some formless and unstable tenets of a new philosophy, tenets which, like the flowers of the field, are in existence today and die tomorrow; this is supreme imprudence and something that would make dogma itself a reed shaken by the wind." -- Pope Pius XII

"It is clear, therefore, that sacred tradition, Sacred Scripture and the teaching authority of the Church, in accord with God's most wise design, are so linked and joined together that one cannot stand without the others, and that all together and each in its own way under the action of the one Holy Spirit contribute effectively to the salvation of souls." -- The Second Vatican Council

"There must be no [liturgical] innovations unless the good of the Church genuinely and certainly requires them; and care must be taken that any new forms adopted should in some way grow organically from forms already existing." -- The Second Vatican Council