It is doubtful that the pope would use Twitter to proclaim Church doctrine.
Yes, they had many differences on matters of authority and doctrine. Some Popes were even excommunicated by Church Synods (or Councils) and other rival Popes were elected in their place, called Ante-Popes.
In the history of the Church there have been a number of bad, even evil, popes but not a single one taught anything contrary to Catholic doctrine.
There are about 80 popes considered as saints in the Catholic Church.
The Bible.Catholic AnswerActually, the ultimate authority on Christian doctrine is considered God, who, by His Son, Jesus Christ, and the Holy Spirit, appointed St. Peter to head His Church. Thus the Church is the ultimate authority on Catholic practice and doctrine. From the Church, very early on, the New Testament was written, and was approved by the Church near the end of the fourth century. Our Blessed Lord, Jesus Christ, guaranteed Peter (and his successors, the Popes), but did NOT guarantee the Bible. The Church is the only guarantee of the Bible.
Protection of Church Dogma and Doctrine...aka the core beliefs of the Church. Kind of like the Supreme Court interpreting to see if beliefs are in line with dogma (aka the Constitution)
We know of no church with three popes. No such animal.
Actually, Our Blessed Lord is the unity and foundation of the Church. The Popes may be considered that as they are His representatives on earth, see St. Matthew 16:17-19.
No, the Church has had 266 popes (as of 2013) and all have had names.
Yes, there have been several popes in the past who were an embarrassment to the Church.
Because it is where St. Peter and his successors the Popes set up the headquarters of the Catholic Church.
There have been about 80 popes who are considered as saints. Some of these were declared saints in the early Church before the canonization process existed. Others are in various stages of canonization. See the complete list of popes and you will find all the popes who are saints, canonized saints and candidates for sainthood.
No, in the Roman Catholic Church, popes are not allowed to be married.