To Mary alone God gave the keys of the cellars of divine love and the ability to enter the most sublime and secret ways of perfection, and lead others along them. Mary alone gives to the unfortunate children of unfaithful Eve entry into that earthly paradise where they may walk pleasantly with God and be safely hidden from their enemies. There they can feed without fear of death on the delicious fruit of the tree of life and the tree of the knowledge of good and evil. They can drink copiously the heavenly waters of that beauteous fountain which gushes forth in such abundance. As she is herself the earthly paradise, that virgin and blessed land from which sinful Adam and Eve were expelled she lets only those whom she chooses enter her domain in order to make them saints.
Saint Louis de Montfort, Treatise on True Devotion to Mary, no.45