The Secret of Mary
The Secret of Mary presents almost the same thing as True Devotion to the Blessed Virgin in a shorter form. but also includes a section on the “Tree of Life”. It appears to have been written for a member (or members) of a Religious Congregation. The title shows how St. Louis Marie presents the topic: he wants to reveal the “secret” of holiness. or the “secret” to finding happiness. and that “secret” can be found in Mary and especially in the form of devotion to her which she sets out in the book.
As in True Devotion, the first part of this book deals with the need for true devotion to Mary Mother of God for real knowledge, and attachment to Jesus Christ. Again, this devotion to Mary is a means to an end and is never an end in itself, and it is necessary. simply because God Himself has chosen Mary's way to reveal Himself in Jesus Christ.
In the second part of the book, St. Louis Marie briefly examines some forms of true devotion to Mary, before presenting what she calls the “practice of perfect devotion to Mary”, which is said to be unknown to many and practiced by very few. ". This perfect service is said to consist of "surrendering as a servant to Mary, and to Jesus through Mary, and then performing all our actions with Mary, in Mary, through Mary and for Mary," referring to this as a "consecration." He went on to discuss what this meant. and in particular what does he mean by doing all our actions with Mary, in Mary, through Mary, and for Mary”.
In a sort of supplement at the end of this book, we find two very beautiful prayers: a Prayer to Jesus and a Prayer to Mary and a brief metaphor for this form of devotion, which he calls the “Tree of Life.”
The issues briefly presented in The Secret of Mary are much more developed in True Devotion to the Blessed Virgin.