The Latin phrase Ex Cathedra, literally meaning "from the throne (of St Peter)" is applied in Catholic theology to statements made by the pope in his capacity as infallible guide and teacher of the faithful. A papal statement made ex cathedra is said to be protected by the Holy Ghost from all error. However, difficulties often arise when Catholic theologians disagree about whether or not certain statements have been made ex cathedra and when Catholic theologians accept that a statement has been made ex cathedra, but nevertheless disagree about precisely what this infallibly true statement means.
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