Re: Karl Keating's E-Letter of July 17, 2007
What is rarely mentioned and is of prime importance in releasing the Motu Proprio is that the Traditional Rite (Missal of St. Pius V / Bl. John XXIII) is of Apostolic origin. As such, it is part of the deposit of faith, and can never be abrogated. It may develop organically with the Church, but may never be taken away.
One can say that the Missale of 1962 / 1965 is clearly the V2 Mass. Why? Because V2's Sacrosanctum Concilium asked for an organic change in the Mass, thus preserving its Apostolic character.