Ave Maria!Fr. Fessio referring to Cardinal Ratzinger's book The Spirit of the Liturgy and to Moses in the Old Testament and the purpose of the Exodus outlines the fullest possible context to and significance of the Motu Proprio. He says the most important element for the liturgy is reverence and the understanding that its form comes from heaven. Without this the liturgy becomes merely human, then humanistic and finally anti-human, something that imprisons rather than frees.Fr. Fessio covers the importance for celebrating the mass Ad Orientum and the fallacious reasons put forth for abandoning it. The Motu Proprio is then an opportunity for people to celebrate the mass facing east and so should be an important vehicle for healing rifts and for reform within the Church.Fr. Fessio ends this video by stating that the Motu Proprio:"may be as significant for the first half of the 21st Century as Humanae Vitae was for the second half of the 20th Century"Ave Maria!