- Ecclesiam Suam, Paul VI This 1964 encyclical is a sustained reflection on dialogue and it is the first use of the term in church documents.
- Relation of the Church to Non-Christian Religions (Nostra aetate) The Vatican II document which launched dialogue with other religions.
- Constitution on the Church in the Modern World (Gaudium et spes) The last major document of Vatican II, this pastoral constitution broke new ground when it advocated dialogue with the contemporary world.