I'd like to add this beautiful testimony given to me by Mgr Athanasius Schneider, who was in Paris for a meal organised by Renaissance catholique. Monsignor Schneider said that one of his friends, a bishop in Kazakhstan, was a man of excellent doctrine but had never celebrated traditional Mass. But one day, the bishop in question telephoned Monsignor Schneider to tell him the 'good news': he had celebrated the old Mass. And he gave his assessment: "Between the old Mass and the new Mass, the difference is between heaven and earth". Which reminds me of the words of a young Parisian priest: "I don't want to learn to say the traditional Mass, because if I did, I'd only say that one!