However, as many as there are, they only have one leader, the Pope. The Pope is the bishop of Rome, both the Eastern and Western Catholic Churches fall under its jurisdiction. The Roman bishop is important to the Catholic community because he is believed to be the successor of St. Peter the Apostle (a disciple of Jesus). They also believe he is infallible when it comes to religious doctrine. This is one of the main reasons why the Orthodox Church and the Roman Catholic Church are in conflict. However, the Orthodox Church believes that the Church has a leader, the Holy Spirit, and also believes that only Christ is infallible. Another major difference between Orthodox and Roman Catholic doctrine is the belief in "original sin" or "ancestral sin", Roman Catholics believe that everyone inherited Adam's guilt. The Orthodox, on the other hand, believe that no one is born in sin and that everyone has the opportunity to do good. A small difference between Orthodoxy and Roman Catholicism is how much each member fasts during the period of Great Lent. According to Gregory Auxier, who is an educated member of the Orthodox Church, "During Great Lent we Orthodox fast from meat and dairy products every day, while Catholics fast only from meat, and only on Wednesdays and Saturdays".