the catholic church has never contradicted itself, from an official capacity

Thanks again for letting me delay my post. I have a few items to add to your list of banned arguments: Slavery The Catholic Church once allowed slavery with a few weak caveats but now they universally condemn the behavior. At one point they said that slavery was not contrary to Natural/Devine Law and later corrected saying that it dishonored the Creator and was a poison to society [2]. This is a clear contradiction: “In the early thirteenth century, official support for slavery and the slave trade was incorporated into Canon Law… Canon law provided for four just titles for holding slaves: slaves captured in war, persons condemned to slavery for a crime; persons selling themselves into slavery, including a father selling his child; children of a mother who is a slave.” “In 1866 the Holy Office issued an Instruction (signed by Pope Pius IX) in reply to questions from a vicar apostolic of the Galla tribe in Ethiopia: ". . . slavery itself, considered as such in its essential nature, is not at all contrary to the natural and divine law, and there can be several just titles of slavery and these are referred to by approved theologians and commentators of the sacred canons.” “In 1839, Pope Gregory XVI issued a Bull, entitled In Supremo Apostolatus in which he condemned slavery, with particular reference to New World colonial slavery and the slave trade, calling it "inhumanum illud commercium." “In 1965 the Second Vatican Council declared without qualification that slavery was an "infamy" that dishonored the Creator and was a poison in society.” “Paul II repeated the condemnation of "infamies", including slavery, issued by the Second Vatican Council: "Thirty years later, taking up the words of the Council and with the same forcefulness I repeat that condemnation in the name of the whole Church, certain that I am interpreting the genuine sentiment of every upright conscience.” List of Prohibited Books The Index Librorum Prohibitorum has changed removing books from the list reflecting a change in teaching. First Catholics are instructed not to read these books since they are immoral or heretical and later are instructed that it is permitted or even encouraged. Johannes Kepler's Epitome astronomiae Copernicianae, was on the list for more than a hundred years from 1621 to 1758. Galileo’s works were also once banned as heretical but in 1741 Pope Benedict XIV endorsed the publication of his complete scientific works. Writings from Mary Kowalska were once forbidden even though she is now considered a Saint [3]. The Heliocentric view is heretical/incorrect For his contributions to physics Galileo was tried for heresy and sentenced to a life under house arrest. As I mentioned his written works were placed on the Catholic list of banned books. A commission of theologians issued a unanimous report: the idea that the sun is stationary is, "foolish and absurd in philosophy, and formally heretical since it explicitly contradicts in many places the sense of Holy Scripture.” The Catholic teaching was clearly that Galileo’s ideas were dangerous, incorrect and should be suppressed [4]. In 1758 the church lifted the ban on Galileo’s works along with all the other works supporting the heliocentric view and even promoted the publication of his writing. “All traces of official opposition to heliocentrism by the church disappeared in 1835 when these works were finally dropped from the Index.” This is a clear reversal for the church. From Pope John Paul II, “The error of the theologians of the time, when they maintained the centrality of the Earth, was to think that our understanding of the physical world's structure was, in some way, imposed by the literal sense of Sacred Scripture” Friday Brisket The Church has reversed its position on eating meat on Fridays twice first allowing the eating of meat in 1984 and then forbidding the practice again in 2011. [1] Papal Bulls are official statements issued buy the pope with the seal of Saint Peter and Paul on one side and the pope’s signature on the other. They are as official as you get: Knights of Templar In 1139 bull ‘Omne Datum Optimum’ endorsed the Knights of Templar. In 1307 ‘Pastoralis praeminentiæ’ ordered the arrest and confiscated the possessions of the knights of Templar. In 1312 ‘Nuper in concilio’ gave the Templar their possessions back reaffirming the right to their property [5]. Independence of the University of Paris In 1219 the bull ‘Super speculam’ closed all law schools in Paris and forbid the study of civil law. In 1231 ‘Parens scientiarum’ guaranteed the independence of the University of Paris including the study of civil law [6] Treatment of Jews In 1233 the bull ‘Etsi Judaeorum’ demanded that Jews be treated the same as Christians expected to be treated in heathen lands. In 1235 ‘Cum hora undecima’ authorized friars to preach in pagan lands but ‘Turbato corde’ in 1267 legally bared Christians from converting to Judaism. In 1593 ‘Caeca et Obdurata’ expelled Jews from the Papal states. Banning the Society of Jesus In 1773 bull ‘Dominus ac Redemptor Noster’ banned and suppressed the Society of Jesus which was reestablished in 1814 by ‘Sollicitudo omnium ecclesiarum.’ All rights were restored to the Society of Jesus in 1880 officially revoking the bull ‘Dominus ac Redemptor Noster’ with ‘Dolemus inter alia.’ I’ll admit, I had a lot of ideas but the Catholic Church rarely admits a mistake unlike institutions that are willing to learn such as the scientific community. I had a difficult time pinning them down on the various inquisitions, witch trials, the burning of heretics, various instances of anti-Semitism including the support of Nazism, condemning condom use in Aids ridden areas, prejudice of women/homosexuals and the massive overhaul of the canon law in the first Vatican council. The list goes on and on. The Catholic Church rarely admits to being wrong or corrects past mistakes; I am now thoroughly convinced but these instances I mention are clear contradictions. [1] http://www.telegraph.co.uk... [2] http://en.wikipedia.org... [3] https://en.wikipedia.org... [4] http://en.wikipedia.org... [5] http://en.wikipedia.org... [6] http://books.google.com... pg 283-285