Pope Francis
Dilexit Nos §148
Dilexit Nos: On the Human and Divine Love of the Heart of Jesus Christ
148 Devotion to the heart of Christ reappears in the spiritual journey of many saints, all quite different from each other; in every one of them, the devotion takes on new hues. Saint Vincent de Paul, for example, used to say that what God desires is the heart: “God asks primarily for our heart – our heart – and that is what counts. How is it that a man who has no wealth will have greater merit than someone who has great possessions that he gives up? Because the one who has nothing does it with greater love; and that is what God especially wants…” This means allowing one’s heart to be united to that of Christ. “What blessing should a Sister not hope for from God if she does her utmost to put her heart in the state of being united with the heart of our Lord!”
Source: Dilexit Nos (Vatican.va)