Sacred Scripture
Introduction to the Devout Life - St. Francis de Sales
The Imitation of Christ - Thomas A. Kempis
The Three Ways of the Spiritual Life - Fr. Garrigou-Lagrange
Fire Within: St. Teresa of Avila, St. John of the Cross, and the Gospel, On Prayer - Fr. Dubai
Practice of Christian and Religious Perfection - Fr. Rodriguez
Uniformity with God's Will - St. Alphonsus Liguori
The Story of a Soul: The Autobiography of St. Therese of Lisieux - St. Therse of Lisieux
St. Catherine of Siena - St. Catherine of Siena
The Way, The Furrow, The Forge - St. Josemaria Escriva
The Life of Christ - Venerable Fulton Sheen
True Devotion to the Blessed Virgin - St. Louis de Montfort
The Confession of St. Augustine -  St. Augustine
The Way of Perfection - St. Teresa of Avila
Interior Castle - St. Teresa of Avila
Foundations - St. Teresa of Avila
Spiritual Canticle - St. John of the Cross
The Living Flame of Love - St. John of the Cross
The Dark Night of the Soul - St. John of the Cross
The Ascent of Mount Carmel -  St. John of the Cross
Life of St. Antony - St. Athanasius
The Conferences - St. John Cassian
On Grace and Free Will - St. Augustine of Hippo
City of God - St. Augustine of Hippo
The Life of Christ  - Ludolph of Saxony
The Sinner's Guide - Venerable Louis of Grenada
The Spiritual Combat - Dom Lorenzo Scupoli
Treatise on the Love of God - St. Francis de Sales
The Soul of the Apostolate - Jean-Baptiste Chautard
The Redeeming Love of Christ - St. Alphonsus Liguori
The Spiritual Exercises - St. Ignatius