Ecclesia De Eucharistia

If I could, I would quote you the entire encyclical, but since I can't, here are some highlights from Ecclesia de Eucharistia:

"Even when it is celebrated on the humble altar of a country church, the Eucharist is always in some way celebrated on the altar of the world. It unites heaven and earth. It embraces and permeates all creation." (8.)

"The Eucharist, as Christ's saving presence in the community of the faithful and its spiritual food, is the most precious possession which the Church can have in her journey through history." (9.)

"The Eucharistic Sacrifice is intrinsically directed to the inward union of the faithful with Christ through communion; we receive the very One who offered himself for us, we receive his body which he gave up for us on the Cross and his blood which he "poured out for many for the forgiveness of sins" (Mt 26:28)." (16.)

"Those who feed on Christ in the Eucharist need not wait until the heareafter to receive eternal life: they already possess it on earth, as the first-fruits of a future fullness which will embrace man in his totality." (18.)

"The Eucharist is a priceless treasure: by not only celebrating it but also by praying before it outside of Mass we are enabled to make contact with the very wellspring of grace." (25.)

"In a certain sense Mary lived her Eucharistic faith even before the institution of the Eucharist, by the very fact that she offered her virginal womb for the Incarnation of God's Word." (55.)

"Every commitment to holiness, every activity aimed at carrying out the Church's mission, every work of pastoral planning, must draw the strength it needs from the Eucharistic mystery and in turn be directed to that mystery as its culmination. In the Eucharist we have Jesus, we have his redemptive sacrifice, we have his resurrection, we have the gift of the Holy Spirit, we have adoration, obedience and love of the Father. Were we to disregard the Eucharist, how could we overcome our own deficiency?" (60.)