Source: From "The Holy Eucharist" (Visits To The Most Blessed Sacrament and To The Blessed Virgin Mary: For Each Day Of The Month) by St. Alphonsus Ligouri
"Oh, how sweet a joy it is to remain with faith and tender devotion before the Eucharist, and converse familiarly with Jesus Christ, who is there for the express purpose of listening to and graciously hearing those who pray to him."
"In a quarter of an hour's prayer, spent in the presence of the Blessed Sacrament, you will perhaps gain more than in all the other spiritual exercises of the day."
"Certainly amongst all devotions, after that of receiving the sacraments, that of adoring Jesus in the Blessed Sacrament holds the first place, is the most pleasing to God, and the most useful to ourselves."
"Our holy faith teaches us, and we are bound to believe, that in the consecrated Host, Jesus Christ is really present under the species of bread. But we must also understand that He is thus present on our altars as on a throne of love and mercy, to dispense graces and there to show us the love which He bears us, by being pleased to dwell night and day hidden in the midst of us."
"There it was (in Eucharistic Adoration) that St. Francis Xavier found refreshment in the midst of his many labours in India; for he employed his days in toiling for souls, and his nights in the presence of the Blessed Sacrament. St. John Francis Regis did the same thing; and sometimes finding the church closed, he endeavoured to satisfy his longings by remaining on his knees, outside the door exposed to the rain and cold so that at least at a distance he might attend upon
his Comforter concealed under the sacramental species. St. Francis of Assisi used to go to communicate all his labors and undertakings to Jesus in the most Holy Sacrament."
"Be also assured that Jesus Christ finds means to console a soul which remains with a recollected spirit before the Most Blessed Sacrament, far beyond what the world can do with all its feasts and pastimes."
"What shall we do, you sometimes ask, in the presence of Jesus in the Blessed Sacrament? Love him, praise him, thank him and ask him for things. What does a thirsty person do when he sees a pure clean fountain?"