Considered by many to be one of the greatest single books of Marian spirituality ever written, Secret of Mary is St Louis de Montfort's classic statement on the spiritual way to Jesus Christ though the Blessed Virgin Mary. Beloved by countless souls, this book sums up the entire Christian life, showing a way of holiness that is short, easy, secure, and perfect—a way of life chosen by Our Lord Himself. In this book, de Montfort explains the wonderful spiritual effects which true devotion to Mary brings about in a person's life.

It is primarily an interior practice to be carried out daily, from moment to moment, and if followed faithfully, it will help to cultivate in the individual a profound sense of holiness. In his 1987 encyclical, Redemptoris Mater the Pope cited Saint Louis Marie Grignion de Montfort as a teacher of Marian spirituality.

Saint Louis-Marie Grignion De Montfort (1673-1716)—author of The Secret of the Rosary and the originator of total consecration to Mary—remains one of the greatest apostles of Marian devotion the world has ever known. As a young priest, De Montfort dedicated himself to preaching to the people. This highly gifted orator s language was simple but full of divine love, much as you will find in True Devotion to Mary. De Montfort's whole life was marked by constant prayer, love for the poor and holy joy in humiliations and persecutions. De Montfort was canonized by Pius XII in 1947.