St. Alphonsus Liguori
“My sweetest Lord, my most amiable Saviour, I am now visiting Thee on this altar; but Thou returnest me the visit with far other love when Thou enterest my soul in the Holy Communion. Thou art then not only present to me, but Thou becomest my food; Thou unitest and givest Thy whole self to me, so that I can then say with truth, My Jesus, Thou art now all mine. Since then, Thou givest Thyself all to me, it is reasonable that I should give myself all to Thee.”
Source: St. Alphonsus Liguori, Visits to the Most Holy Sacrament