Their not against each other
Both are catholic
Both can receive communion in each others church
Both were founded by Christ and are one universal church
Both have Apostolic Secession
Not entirely true Marty. Those of the Orthodox order can indeed partake in communion in all Catholic Churches, as they are recognized for their devotion to the Gospels, Liturgy, etc. However, it is still not common for a lay Catholic to partake communion in an Orthodox mass. Permission must be requested first and an invitation granted. Particularly in the Russian & Eastern Orthodox orders.
This link should help you with what you ask:
http://en.wikipedia.org/wiki/Catholic%E2%80%93Eastern_Orthodox_theological_diff erences
It would be easier to list five beliefs of the Roman Church that are not accepted by Orthodoxy:
1. Papal supremacy
2. Immaculate conception of Mary
3. Papal infallibility
4. The flukeEUlause of the Creed
Both Catholicism and Orthodox are the same Church, and hold generally to the same doctrines and form of worship, but the two are in schism. The Roman Church held its own councils after the schism and made pronouncements not accepted by Orthodoxy.
ha ha, tough luck there, I know many Orthodox Christians, and while their mass has some differences, the Byzantine mass ( Orthodox Catholics) mass is relatively the same, so you really can't use that.
Married Priests do not count, the Catholic Church does have married priests it all depends on which rite - (only the Latin right has unmarried priests) The Orthodox and Catholic Churches also follow the the same guidelines that Bishops cannot be married.
It really comes down to some nutty gritty minor doctrinal differences, while the Orthodox Christians believe in the Primacy of Peter, some think it has different implications in regards to the Pope as to how much power and control the Successor of Peter actually has..they don't deny the successor of Peter mind you, but they just don't think or question the rights of the Pope.
You could go with the Fathers of their Church, the Catholic Church recognizes them as saints mind you and uses their writings often, and we do share some of the same Fathers as well.
Also there is -some- dispute about the assumption of Mary, -that she died or "fell asleep" and was taken to heaven.
1) The Prayer of Jesus ("Lord Jesus Christ, Son of God and my Savior, have mercy on me a sinner !") is a perpetual meditative prayer recited repetitively in an attempt to find "the place of the heart" which is a mystical way to say that, as a result of sin, our very person was fragmented ; our heart, our mind and our mouth no longer operate in harmony ; so "to seek the place of the heart" is a spiritual exercise initiated by the mind to align the mind with our spiritual heart.
2) Prayer in front of a religious Icon: Icons are prayers in and of themselves ; as the "writer" (painter) of the Icon prayerfully allows God to syn energetically use his/her hand, a Holy Image gradually emerges that will become for the Orthodox faithful a source of inspiration and revelation during prayer. Holy Icons are to images what the Holy Bible is to books.
3) Litanies to the Virgin Mary: While some Roman Catholics are committed to impressive Marian devotions (such as the Holy Rosary) Orthodox would not even consider offering a prayer to God without having recourse to the Intercession of the Theotokos (Mother of God) ; it is unthinkable for an Orthodox to leave the Virgin Mary out of the picture ; so as part of the or do of Divine Liturgy (Holy Mass) litanies to the Virgin Mary are included through and through.
4) Mystical spirituality: While many Roman Catholics were moved by the life of saints and such wonderful Marian Apparitions as Lourdes, Fatima, Garabandal (authentic), Medjugorje and many others, Orthodox, on the other hand, have never lost track of the mystical dimension of their spiritual life ; in Orthodoxy, mystical life and spirituality are not optional or a matter of personal devotion and preferences ; it is part of our Faith.
5) The Christian sign of the Cross : Many Catholics look like they are swatting mosquitoes when they do the Sign of the Cross ; the proper (original, apostolic) way is by uniting the forefinger with both thumb and middle finger to signify the Holy Trinity, while keeping the remaining two fingers against the palm (the two natures of Christ) and signing oneself starting with the forehead, going towards the abdomen, the right shoulder and then the left shoulder (ending on the heart) while reciting the Glory Be.
According to Roman Catholic Church teaching: Catholics can take Eucharist in Orthodox Churces and vice verse
According to Eastern Orthodox Church teaching: Catholics CAN'T take Eucharist in Orthodox Churces and vice verse
Roman Catholicism vs Orthodox?
