RP McKosker,My understanding is that "ex Cathedra" means the Pope is speaking from God, and the words are therefore infallible (Popes rarely do this) while "motu Proprio" means he is speaking solely on his own authority. Abusive comment hidden. (Show it anyway.)
My understanding is that "ex Cathedra" means the Pope is speaking from God, and the words are therefore infallible (Popes rarely do this) while "motu Proprio" means he is speaking solely on his own authority.