Below are some Encyclicals of several Popes. An Encyclical is a Teaching Document/Instruction from a Pope. With each Encyclical listed there is a link for entire content. A brief extract from each is given so the reader may get a feel for what awaits at the link given. ENJOY.
On Liberalism and Religious Indifferentism
Pope Gregory XVI – 1832
“We speak of the things which you see with your own eyes, which We both bemoan. Depravity exults; science is impudent; liberty, dissolute. The holiness of the sacred is despised; the majesty of divine worship is not only disapproved by evil men, but defiled and held up to ridicule. Hence sound doctrine is perverted and errors of all kinds spread boldly. The laws of the sacred, the rights, institutions, and discipline — none are safe from the audacity of those speaking evil. Our Roman See is harassed violently and the bonds of unity are daily loosened and severed. The divine authority of the Church is opposed and her rights shorn off. She is subjected to human reason and with the greatest injustice exposed to the hatred of the people and reduced to vile servitude. The obedience due bishops is denied and their rights are trampled underfoot. Furthermore, academies and schools resound with new, monstrous opinions, which openly attack the Catholic faith; this horrible and nefarious war is openly and even publicly waged. Thus, by institutions and by the example of teachers, the minds of the youth are corrupted and a tremendous blow is dealt to religion and the perversion of morals is spread. So the restraints of religion are thrown off, by which alone kingdoms stand. We see the destruction of public order, the fall of principalities, and the overturning of all legitimate power approaching. Indeed this great mass of calamities had its inception in the heretical societies and sects in which all that is sacrilegious, infamous, and blasphemous has gathered as bilge water in a ship’s hold, a congealed mass of all filth” https://www.papalencyclicals.net/greg16/g16mirar.htm
Quanta Cura
Condemning Current Errors
Pope BI. Pius IX – 1864
“For you well know, venerable brethren, that at this time men are found not a few who, applying to civil society the impious and absurd principle of “naturalism,” as they call it, dare to teach that “the best constitution of public society and (also) civil progress altogether require that human society be conducted and governed without regard being had to religion any more than if it did not exist; or, at least, without any distinction being made between the true religion and false ones.” And, against the doctrine of Scripture, of the Church, and of the Holy Fathers, they do not hesitate to assert that “that is the best condition of civil society, in which no duty is recognized, as attached to the civil power, of restraining by enacted penalties, offenders against the Catholic religion, except so far as public peace may require.” From which totally false idea of social government they do not fear to foster that erroneous opinion, most fatal in its effects on the Catholic Church and the salvation of souls, called by Our Predecessor, Gregory XVI, an “insanity,”2 viz., that “liberty of conscience and worship is each man’s personal right, which ought to be legally proclaimed and asserted in every rightly constituted society; and that a right resides in the citizens to an absolute liberty, which should be restrained by no authority whether ecclesiastical or civil, whereby they may be able openly and publicly to manifest and declare any of their ideas whatever, either by word of mouth, by the press, or in any other way.” But, while they rashly affirm this, they do not think and consider that they are preaching “liberty of perdition;”3 and that “if human arguments are always allowed free room for discussion, there will never be wanting men who will dare to resist truth, and to trust in the flowing speech of human wisdom; whereas we know, from the very teaching of our Lord Jesus Christ, how carefully Christian faith and wisdom should avoid this most injurious babbling.” https://www.papalencyclicals.net/pius09/p9quanta.htm
The Syllabus Of Errors
. ERRORS HAVING REFERENCE TO MODERN LIBERALISM
77. In the present day it is no longer expedient that the Catholic religion should be held as the only religion of the State, to the exclusion of all other forms of worship. — Allocution “Nemo vestrum,” July 26, 1855.
78. Hence it has been wisely decided by law, in some Catholic countries, that persons coming to reside therein shall enjoy the public exercise of their own peculiar worship. — Allocution “Acerbissimum,” Sept. 27, 1852.
79. Moreover, it is false that the civil liberty of every form of worship, and the full power, given to all, of overtly and publicly manifesting any opinions whatsoever and thoughts, conduce more easily to corrupt the morals and minds of the people, and to propagate the pest of indifferentism. — Allocution “Nunquam fore,” Dec. 15, 1856.
80. The Roman Pontiff can, and ought to, reconcile himself, and come to terms with progress, liberalism and modern civilization.- -Allocution “Jamdudum cernimus,” March 18, 1861. https://www.papalencyclicals.net/pius09/p9syll.htm
Humanum Genus
On Freemasonry
Pope Leo XIII – 1884
” The race of man, after its miserable fall from God, the Creator and the Giver of heavenly gifts, “through the envy of the devil,” separated into two diverse and opposite parts, of which the one steadfastly contends for truth and virtue, the other of those things which are contrary to virtue and to truth. The one is the kingdom of God on earth, namely, the true Church of Jesus Christ; and those who desire from their heart to be united with it, so as to gain salvation, must of necessity serve God and His only-begotten Son with their whole mind and with an entire will. The other is the kingdom of Satan, in whose possession and control are all whosoever follow the fatal example of their leader and of our first parents, those who refuse to obey the divine and eternal law, and who have many aims of their own in contempt of God, and many aims also against God.” https://www.papalencyclicals.net/leo13/l13human.htm
Immortale Dei
On the Christian Constitution of States
Pope Leo XIII – 1885
” As a consequence, the State, constituted as it is, is clearly bound to act up to the manifold and weighty duties linking it to God, by the public profession of religion. Nature and reason, which command every individual devoutly to worship God in holiness, because we belong to Him and must return to Him, since from Him we came, bind also the civil community by a like law. For, men living together in society are under the power of God no less than individuals are, and society, no less than individuals, owes gratitude to God who gave it being and maintains it and whose everbounteous goodness enriches it with countless blessings. Since, then, no one is allowed to be remiss in the service due to God, and since the chief duty of all men is to cling to religion in both its teaching and practice-not such religion as they may have a preference for, but the religion which God enjoins, and which certain and most clear marks show to be the only one true religion — it is a public crime to act as though there were no God. So, too, is it a sin for the State not to have care for religion as a something beyond its scope, or as of no practical benefit; or out of many forms of religion to adopt that one which chimes in with the fancy; for we are bound absolutely to worship God in that way which He has shown to be His will. All who rule, therefore, would hold in honor the holy name of God, and one of their chief duties must be to favor religion, to protect it, to shield it under the credit and sanction of the laws, and neither to organize nor enact any measure that may compromise its safety. This is the bounden duty of rulers to the people over whom they rule. For one and all are we destined by our birth and adoption to enjoy, when this frail and fleeting life is ended, a supreme and final good in heaven, and to the attainment of this every endeavor should be directed. Since, then, upon this depends the full and perfect happiness of mankind, the securing of this end should be of all imaginable interests the most urgent. Hence, civil society, established for the common welfare, should not only safeguard the wellbeing of the community, but have also at heart the interests of its individual members, in such mode as not in any way to hinder, but in every manner to render as easy as may be, the possession of that highest and unchangeable good for which all should seek. Wherefore, for this purpose, care must especially be taken to preserve unharmed and unimpeded the religion whereof the practice is the link connecting man with God.” https://www.papalencyclicals.net/leo13/l13sta.htm
Libertas Praestantissimum
On the Nature of Human Liberty
Pope Leo XIII – 1888
“Such, then, being the condition of human liberty, it necessarily stands in need of light and strength to direct its actions to good and to restrain them from evil. Without this, the freedom of our will would be our ruin. First of all, there must be law; that is, a fixed rule of teaching what is to be done and what is to be left undone. This rule cannot affect the lower animals in any true sense, since they act of necessity, following their natural instinct, and cannot of themselves act in any other way. On the other hand, as was said above, he who is free can either act or not act, can do this or do that, as he pleases, because his judgment precedes his choice. And his judgment not only decides what is right or wrong of its own nature, but also what is practically good and therefore to be chosen, and what is practically evil and therefore to be avoided. In other words, the reason prescribes to the will what it should seek after or shun, in order to the eventual attainment of man’s last end, for the sake of which all his actions ought to be performed. This ordination of reason is called law. In man’s free will, therefore, or in the moral necessity of our voluntary acts being in accordance with reason, lies the very root of the necessity of law. Nothing more foolish can be uttered or conceived than the notion that, because man is free by nature, he is therefore exempt from law. Were this the case, it would follow that to become free we must be deprived of reason; whereas the truth is that we are bound to submit to law precisely because we are free by our very nature. For, law is the guide of man’s actions; it turns him toward good by its rewards, and deters him from evil by its punishments.” https://www.papalencyclicals.net/leo13/l13liber.htm
E Supremi
On the Restoration of All things in Christ
Pope Pius X – 1903
” Verily no one of sound mind can doubt the issue of this contest between man and the Most High. Man, abusing his liberty, can violate the right and the majesty of the Creator of the Universe; but the victory will ever be with God — nay, defeat is at hand at the moment when man, under the delusion of his triumph, rises up with most audacity. Of this we are assured in the holy books by God Himself. Unmindful, as it were, of His strength and greatness, He “overlooks the sins of men” (Wisd. xi., 24), but swiftly, after these apparent retreats, “awaked like a mighty man that hath been surfeited with wine” (Ps. Ixxvii., 65), “He shall break the heads of his enemies” (Ps. Ixvii., 22), that all may know “that God is the king of all the earth” (Ib. Ixvi., 8), “that the Gentiles may know themselves to be men’ (Ib. ix., 20).” https://www.papalencyclicals.net/pius10/p10supre.htm
Notre Charge Apostolique
Our Apostolic Mandate
Pope Pius X – 1910
“Our Apostolic Mandate requires from Us that We watch over the purity of the Faith and the integrity of Catholic discipline. It requires from Us that We protect the faithful from evil and error; especially so when evil and error are presented in dynamic language which, concealing vague notions and ambiguous expressions with emotional and high-sounding words, is likely to set ablaze the hearts of men in pursuit of ideals which, whilst attractive, are nonetheless nefarious. Such were not so long ago the doctrines of the so-called philosophers of the 18th century, the doctrines of the Revolution and Liberalism which have been so often condemned; such are even today the theories of the Sillon which, under the glowing appearance of generosity, are all too often wanting in clarity, logic and truth. These theories do not belong to the Catholic or, for that matter, to the French Spirit.” https://www.papalencyclicals.net/pius10/p10notre.htm
Quas Primas
Introducing the Feast of Christ the King
Pope Pius XI – 1925
” Thus the empire of our Redeemer embraces all men. To use the words of Our immortal predecessor, Pope Leo XIII: “His empire includes not only Catholic nations, not only baptized persons who, though of right belonging to the Church, have been led astray by error, or have been cut off from her by schism, but also all those who are outside the Christian faith; so that truly the whole of mankind is subject to the power of Jesus Christ.”[28] Nor is there any difference in this matter between the individual and the family or the State; for all men, whether collectively or individually, are under the dominion of Christ. In him is the salvation of the individual, in him is the salvation of society. “Neither is there salvation in any other, for there is no other name under heaven given to men whereby we must be saved.”[29] He is the author of happiness and true prosperity for every man and for every nation. “For a nation is happy when its citizens are happy. What else is a nation but a number of men living in concord?”[30] If, therefore, the rulers of nations wish to preserve their authority, to promote and increase the prosperity of their countries, they will not neglect the public duty of reverence and obedience to the rule of Christ. What We said at the beginning of Our Pontificate concerning the decline of public authority, and the lack of respect for the same, is equally true at the present day. “With God and Jesus Christ,” we said, “excluded from political life, with authority derived not from God but from man, the very basis of that authority has been taken away, because the chief reason of the distinction between ruler and subject has been eliminated. The result is that human society is tottering to its fall, because it has no longer a secure and solid foundation.”[31]” https://www.papalencyclicals.net/pius11/p11prima.htm
Mortalium Animos
On Religious Unity
Pope Pius XI – 1928
” Let, therefore, the separated children draw nigh to the Apostolic See, set up in the City which Peter and Paul, the Princes of the Apostles, consecrated by their blood; to that See, We repeat, which is “the root and womb whence the Church of God springs,”[27] not with the intention and the hope that “the Church of the living God, the pillar and ground of the truth”[28] will cast aside the integrity of the faith and tolerate their errors, but, on the contrary, that they themselves submit to its teaching and government. Would that it were Our happy lot to do that which so many of Our predecessors could not, to embrace with fatherly affection those children, whose unhappy separation from Us We now bewail. Would that God our Savior, “Who will have all men to be saved and to come to the knowledge of the truth,”[29] would hear us when We humbly beg that He would deign to recall all who stray to the unity of the Church! In this most important undertaking We ask and wish that others should ask the prayers of Blessed Mary the Virgin, Mother of divine grace, victorious over all heresies and Help of Christians, that She may implore for Us the speedy coming of the much hoped-for day, when all men shall hear the voice of Her divine Son, and shall be “careful to keep the unity of the Spirit in the bond of peace.”[30]”
Humani Generis
On Human Origin
Pope Pius XII – 1950
“In theology some want to reduce to a minimum the meaning of dogmas; and to free dogma itself from terminology long established in the Church and from philosophical concepts held by Catholic teachers, to bring about a return in the explanation of Catholic doctrine to the way of speaking used in Holy Scripture and by the Fathers of the Church. They cherish the hope that when dogma is stripped of the elements which they hold to be extrinsic to divine revelation, it will compare advantageously with the dogmatic opinions of those who are separated from the unity of the Church and that in this way they will gradually arrive at a mutual assimilation of Catholic dogma with the tenets of the dissidents” https://www.papalencyclicals.net/pius12/p12human.htm
Haurietis Aquas
Draw Refreshing Water From the Sacred Heart
Pope Pius XII – 1956
” Since our divine Redeemer as our lawful and perfect Mediator, out of His ardent love for us, restored complete harmony between the duties and obligations of the human race and the rights of God, He is therefore responsible for the existence of that wonderful reconciliation of divine justice and divine mercy which constitutes the sublime mystery of our salvation. On this point the Angelic Doctor wisely comments: “That man should be delivered by Christ’s Passion was in keeping with both His mercy and His justice. With His justice, because by His Passion Christ made satisfaction for the sins of the human race, and so man was set free by Christ’s justice; and with His mercy, for since man of himself could not satisfy for the sin of all human nature, God gave him His Son to satisfy for him. And this came of a more copious mercy than if he had forgiven sins without satisfaction: Hence St. Paul says: ‘God, who is rich in mercy, by reason of His very great love wherewith He has loved us even when we were dead by reason of our sins, brought us to life together with Christ.’”[32]” https://www.papalencyclicals.net/pius12/p12hauri.htm