AD 1869–1870

First Vatican Council

Rationalism, the loss of the Papal States and questions about the pope's teaching authority.

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Location
Rome
Leaders
Pope Pius IX
Issues discussed
  • Faith and reason
  • Papal primacy and infallibility
Decisions made
  • Dei Filius on faith and reason
  • Pastor Aeternus defining papal primacy and, under strict conditions, infallibility
Historical impact
Clarified and limited the scope of papal definitions; the council was suspended and never formally completed.
Original documents

Sources and References