Jesus is the mediator of justice; Mary obtains for us grace; for, as St. Bernard, St. Bonaventure, St. Bernardine of Siena, St. Germanus, St. Antoninus, and others say, it is the will of God to dispense through the hands of Mary whatever graces he is pleased to bestow upon us. With God, the prayers of the saints are the prayers of His friends, but the prayers of Mary are the prayers of His mother.
Alphonsus Liguori