...This means that the Church proceeds on her way through history without losing sight of her own roots and her own living tradition: this can require, in some cases, also the recovering of precious and important elements which have been lost, forgotten along the way and which the passing of time has rendered less shining in their authentic significance. When that happens it is not a return to the past, but a true and enlightened progress in the liturgical field."."
And in this progress it is impossible not to mention the Motu proprio Summorum Pontificum: "Considering attentively the Motu proprio, as well as the letter addressed by the Pope to the bishops of all the world to present it, a twofold precise understanding emerges. First of all, that of facilitating the accomplishing of "a reconciliation in the bosom of the Church"; and in this sense, as has been said, the Motu proprio is a most beautiful act of love towards the unity of the Church. In second place, and this is a fact which must not be forgotten, that [sc. understanding] of favouring a reciprocal enrichment between the two forms of the Roman rite: in such a way, for instance, that in the celebration according to the Missal of Paul VI (ordinary form of the Roman rite) 'can become manifest, more powerfully than has been the case hitherto, the sacrality which attracts many people to the ancient usage'