If one claims to be Christian, he should be part of the Catholic Church

Yes they can. The interpretation is different, but the interpretation Catholic church makes is also different. But all the teachings, even different are based on the same teachings. But the difference is that the interpretation of the Catholic Church is unique since the Catholic Church is historically the original Church and is therefore the Church founded by Christ. Non-Catholics also attest to this claim. As I shown in a previous debate: "If you are a Roman Catholic, Jesus Christ began your religion in the year 33. "(Ann Landers (Jewish), syndicated columnist in the Daily Record of Morris County, N.J. (from which we take this piece) for Monday, November 11,1996 reads) ROMAN CATHOLICISM: Christian church characterized by its uniform, highly developed doctoral and organizational structure that traces its history to the apostles of Jesus Christ in the 1st century C.E. (Marriam-Webster's Encyclopedia of World Religions " 1999, page 938 ) The history of the Roman Church, therefore, in relation to the ancient oriental churches, is in fact, the history of this claim to supremacy. The claim of supremacy on the part of the bishop of Rome rests on the belief that Christ conferred on the apostle Peter a 'primacy of jurisdiction;' that Peter fixed his see and died at Rome and thus, that the bishops of Rome, as successors of the apostle Peter, have succeeded to his prerogatives of supremacy. In this light, historians read the facts of the early history of the church---and they trace to this acknowledgment of the superiority of that see, the numerous references to Rome on matters of doctrine or discipline; the appeals from other churches, even those of Alexandria, Antioch, and Constantinople; the depositions or nominations of bishops, examination and condemnation of heresies---of which the first five centuries, especially the 4th and 5th, present examples. . . In all the controversies on the Incarnation---the Arian, the Nestorian, the Eutychian, the Monothelite---not only was the orthodoxy of Rome never impeached, but she even supplied at every crisis a rallying point for the orthodox of every church. ( Imperial Encyclopedia and Dictionary, Volume 32 " 1903) The Church of Rome is the earliest of Christian organization; after three centuries of persecution, it was given freedom by the edict of Constantine and Licinius and acquired increased influence. Bishoprics were established in various parts of the empire, but the one at Rome remained supreme, and in time the title of Pope, or father originally borne by all the bishops indiscriminately, began to be restricted to the bishop of Rome.(The World Book Encyclopedia " 1940, Page 6166, Volume 14,) (The Catholic) Church... traces an unbroken line of popes from St. Peter in the 1st century AD to the present occupant of the papal throne. During this nearly 2,000-year period there were more than 30 false popes, most notably during the late 14th and early 15th centuries. These men were merely claimants to the position. There have rarely been periods when a genuine pope was not ruling the church. In 1978 John Paul II became the 264th true pope.(Compton's Interactive Encyclopedia " 1996) "The Roman Catholic church ... the only legitimate inheritor, by an unbroken Episcopal succession descending from Saint Peter to the present time, of the commission and powers conferred by Jesus Christ...Until the break with the Eastern church in 1054 and the break with the Protestant churches in the 1500s, it is impossible to separate the history of the Roman Catholic church from the history of Christianity" (The Encarta Encyclopedia " 1997 says) "33-40 A.D. The Roman Catholic Church is founded by Jesus Christ"(The Timetables of History " 1975) "Roman Catholic authority rests upon a mandate that is traced to the action of Jesus Christ himself, when he invested Peter and, through Peter, his successors with the power of the keys in the church. Christ is the invisible head of his church, and by his authority the pope is the visible head." (Encyclopedia Britannica "1999) "Roman Catholicism Christian church characterized by its uniform, highly developed doctrinal and organizational structure that traces its history to the Apostles of Jesus Christ in the 1st century AD." (Encyclopedia Britannica "1999) "We are compelled to concede to the Papists that they have the Word of GOD, that we received it from them, and that without them, we should have no knowledge of it at all." - Martin Luther, commentary on St. John. Therefore, this means the Catholic Church is the "pillar and foundation of the Truth" (1 Tim. 3:15) and is therefore the upholder of the Truth and cannot err for a foundation of Truth would be infallible and indefectable. Yes, but it doesn't matter. Because the teachings are subject to interpretation. Therefore the definition is based on the believing of the teachings and the following of the religion. The point is that you are all disagreeing. You can't try to prove your point showing a verse of the bible and think it is obvious that your interpretation is correct. Any Christian thinks it is obvious that his interpretation is correct. Exactly! That is why we must go by the authoritative interpretation of the Church since it is the pillar and foundation of the Truth meaning any Church that believes in sola Scriptura could not be founded by Christ. Again, this is not about being right. 2+2 is not ambiguous. The reason a mathematician can't say that 2+2=5 is not true is because it is not subject to interpretation. That is a bad example or analogy and it is a fallacy indeed. The reason for this example wasn't to show how one interprets something, what the example proves is that there can only be one correct solution. 2 +2 = 4 therefore, it cannot equal 5. If there are two churches are teaching two different meanings of something, either one is right or both or right but they both cant be right. That's exactly what the resolution says. You claim that non-Catholic are not Christians because you claim that a Christian should be part of the Catholic Church. There is no other interpretation. The key word here is "claim". You are challenging the claim of Christianity. The reason why Non-Catholic Christians should be a part of the Catholic Church is not because they are not "Real Christians" but because, as the Catechism states: "Nevertheless, our separated brethren, whether considered as individuals or as Communities and Churches, are not blessed with that unity which Jesus Christ wished to bestow on all those who through Him were born again into one body, and with Him quickened to newness of life- that unity which the Holy Scriptures and the ancient Tradition of the Church proclaim. For it is only through Christ's Catholic Church, which is 'the all-embracing means of salvation,' that they can benefit fully from the means of salvation. We believe that Our Lord entrusted all the blessings of the New Covenant to the apostolic college alone, of which Peter is the head, in order to establish the one Body of Christ on earth to which all should be fully incorporated who belong in any way to the people of God." Its like saying all Americans should be Democrat. By saying that, does that mean All Republicans are not American? No I am not. The Catholic Church is the Church of the beginning. The Church that Christ promised that "the gates of hell shall not prevail against it" (Matt. 16:18). Believe in an apostasy? Look at my previous debate and see that there was not ("The Catholic Church is the Authentic Church of Christ"). Sola Scriptura is a new invention that practically every Protestant denomination believes in, therefore, it is not an original teaching. The Church is the "pillar and foundation of the Truth" not the Bible. We must listen to the Church for it is the upholder of the Truth and the interpreter of Scripture. The Early Church attests to this: "But beyond these [Scriptural] sayings, let us look at the very tradition, teaching and faith of the Catholic Church from the beginning, which the Lord gave, the Apostles preached, and the Fathers kept." Athanasius, Four Letters to Serapion of Thmuis, 1:28 (A.D. 360). "[T]hey who are placed without the Church, cannot attain to any understanding of the divine word. For the ship exhibits a type of Church, the word of life placed and preached within which, they who are without, and lie near like barren and useless sands, cannot understand." Hilary of Poitiers, On Matthew, Homily 13:1 (A.D. 355). So Scripture must only be interpreted in the light of the Church as the Early Church Fathers tell us, and Blessed Peter himself (2 Peter 3:15), "No prophecy of Scripture is of any private interpretation". If a Christian wants to know the true meaning of Scripture, he needs to recourse to the Church, the Catholic Church, which is the "pillar and foundation of the Truth" and this Church alone since all other churches are not the pillar or foundation and are therefore, not trustworthy.