72 Another most precious gift of His Sacred Heart is, as We have said, Mary the beloved Mother of God and the most loving Mother of us all. She who gave birth to our Savior according to the flesh and was associated with Him in recalling the children of Eve to the life of divine grace has deservedly been hailed as the spiritual Mother of the whole human race. And so St. Augustine writes of her: "Clearly She is Mother of the members of the Savior (which is what we are), because She labored with Him in love that the faithful who are members of the Head might be born in the Church."(74)
Source: Haurietis Aquas (Vatican.va)