The Reformation Era
Curialism is the position that the Roman Pontiff or Pope has ultimate authority over the church and is "the vicar of Christ on earth… entrusted with the keys of the kingdom as Peter's proper heir. Therefore, he ha[s] final authority, even over the gathered consensus of councils." Conciliarism, on the other hand, posits that "church councils were to be the voice of tradition, wielding authority over the most prestigious of popes." These two positions clashed on many occasions, two of which were the "Great Western Schism" (1378-1417) and the Council of Constance (1414-1418), the latter in which it had seemed that conciliarism had won.