== Controversy ==
The Pope is claimed to be infallible in matters of doctrine (see [<ref>See [http://sourcebooks.fordham.edu/halsall/source/g7-dictpap.asp ''Dictatus Papae''. Medieval Sourcebook: Gregory VII: Dictatus Papae 1090]])</ref>. The concept of [[Papal Infallibility]] (1870) is used to proclaim articles of faith, which are essential for adherents to be truly Catholic. These articles are therefore considered to be a Dogmatic definition. Such pronouncements are rare, and the concept does not mean that Catholics are to believe everything that the Pope says is correct. The last issue was asserting the [[Assumption of Mary]].
The [[First Vatican Council]], of 1870, anathematized all who dispute the Pope's primacy of honor and of jurisdiction (it is lawful to discuss the precise nature of that primacy, provided that such discussion does not violate the terms of the Council's Dogmatic Constitution). The [[Second Vatican Council]] of 1965 '''modified''' many of the dictates of 1870.