. . .While, therefore, we endeavour in every way to preserve the rights of the Church and to obviate or repel present or contingent dangers, We constantly seek for help from Heaven – the sole means of effecting anything – that our labours and our care may obtain their wished for object. We deem that there could be no surer and more efficacious means to this end than by religion and piety to obtain the favour of the great Virgin Mary, the Mother of God, the guardian of our peace and the minister to us of heavenly grace, who is placed on the highest summit of power and glory in Heaven, in order that she may bestow the help of her patronage on men who through so many labours and dangers are striving to reach that eternal city. . . .
It has always been the habit of Catholics in danger and in troublous times to fly for refuge to Mary, and to seek for peace in her maternal goodness; showing that the Catholic Church has always, and with justice, put all her hope and trust in the Mother of God. And truly the Immaculate Virgin, chosen to be the Mother of God and thereby associated with Him in the work of man’s salvation, has a favour and power with her Son greater than any human or angelic creature has ever obtained, or ever can gain. And, as it is her greatest pleasure to grant her help and comfort to those who seek her, it cannot be doubted that she would deign, and even be anxious, to receive the aspirations of the universal Church.
Pope Leo XIII
Supremi Apostolatus Officio
1 September, 1883