"The priest is quite aware that he cannot count on his own efforts to achieve the purposes of his ministry. Rather, he is called to serve as an instrument of the victorious action of Christ whose sacrifice, made present on the altars, obtains for humanity an abundance of divine gifts. However, he also knows that, [...]
"The Sacrifice of Calvary was offered up in a bloody manner by the separation of His blood from His body. In the Mass, this death is mystically and sacramentally presented in an unbloody manner, by the separate consecration of bread and wine. The two are not consecrated together by such words as 'This is My [...]
"The Eucharistic presence of Christ begins at the moment of the consecration and endures as long as the Eucharistic species subsist. Christ is present whole and entire in each of the species and whole and entire in each of their parts, in such a way that the breaking of the bread does not divide Christ." [...]
"In the bread and wine that we bring to the altar, all creation is taken up by Christ the Redeemer to be transformed and presented to the Father." Source: Pope Benedict XVI, SACRAMENTUM CARITATIS (Sacrament of Charity), 2/22/2007
"It is by the conversion of the bread and wine into Christ's body and blood that Christ becomes present in this sacrament. The Church Fathers strongly affirmed the faith of the Church in the efficacy of the Word of Christ and of the action of the Holy Spirit to bring about this conversion. Thus St. [...]
"Yes, my Jesus, I will please Thee; I consecrate my whole will and all my affections to Thee. O infinite Majesty of God, Thou hast left Thyself in this Divine Sacrament, not only that Thou mightest be present with and near us, but principally to communicate Thyself to Thy beloved souls." Source: St. Alphonsus [...]
"Thus, by virtue of the consecration, the species of bread and wine re-present in a sacramental, unbloody manner the bloody propitiatory sacrifice offered by Him on the cross to His Father for the salvation of the world." Source: Pope St. John Paul II, LETTER DOMINICAE CENAE OF THE SUPREME PONTIFF JOHN PAUL II TO [...]
"In this sacrament the consecration of the matter consists in the miraculous change of the substance, which can only be done by God; hence the minister in performing this sacrament has no other act save the pronouncing of the words." Source: St. Thomas Aquinas, Summa Theologica
"O Eternal Word made man, and present for my sake in this Sacrament, what joy should be mine now that I stand in Thy presence, who art my God, who art Infinite Majesty and Infinite Goodness, and hast so tender an affection for my soul! Ye souls who love God, wherever you may be, either [...]
"The Mass has three important parts: the Offertory, the Consecration, and the Communion. In the order of human love, these correspond to engagement, the marriage ceremony, and the consummation of the marriage." Source: Ven. Fulton Sheen, These are the Sacraments