For the last five centuries she has been the inspiration of such spiritual greats as Francis de Sales, Robert Bellarmine, Fenelon, Newman and Hecker. Friedrich von H gel's famous Mystical Element of Religion was a study of the spirituality of Catherine.
Purgation and Purgatory is a collection of sayings on spiritual purification in this life and the next. The Spiritual Dialogue gives us a readable and coherent inner history of Catherine.