Just FYI: A very very authoritative and historic document (signed by four Patriarchs). Gives clear and accurate answers to the Roman Catholic (personally, I prefer to refer to this denominations as 'Latins', for they are neither truly 'Roman' (Rome ceased to be the capital of the Empire in AD 476), nor 'Catholic' ('all-embracing', 'universal') doctrines of papal primacy, infallibility, dogmatic development and filioque. Also deals with the issue of authority in the Church:
Encyclical of the Eastern Patriarchs, 1848
