“God demands your heart of you; He wants it absolutely. If you refuse it, you refuse everything: there can no longer be any real union between you and God. The heart is all of ourselves; it stands for our joys, our pains, our affections. God wants all or nothing. When it is a question of supreme love, we cannot share it with our neighbor: God wants our whole heart and will consent to divide it with no one. Certainly your heart is not so very large; give it entirely! If you divide it into parts, you will find that creatures will always have more than the Creator.”

(St. Peter Julian Eymard from The Eucharist and Christian Perfection II)