"...in order that favours in greater abundance may flow on all Christians, nay on the whole human race, from devotion to the Sacred Heart of Jesus, let the faithful see to it, that to this devotion, the Immaculate Heart of the Mother of God be closely joined. For, by God's Will, in carrying out the work of human Redemption the Blessed Virgin Mary was inseparably linked with Christ in such a manner that our salvation sprang from the love and the sufferings of Jesus Christ to which the love and sorrows of His Mother were intimately united. "
—Pope Pius XII, “Haureties Aquas” (On Devotion to the Sacred Heart), para. 124.