Saint John of the Cross is considered by many as the greatest Spiritual Doctor of the Catholic Church. This high honor elevates his spiritual writings and adds much confidence to those relying upon his teaching. He is a true master of the interior life and has left us a treasure of spiritual wisdom in his four main works, "Ascent to Mount Carmel," "Dark Night of the Soul," "Spiritual Canticle" and "Living Flame of Love." These four books, combined together, make up one continuous exposition of mystical theology that peers into the journey each one of us is called to take toward the life of perfect union with God. In his teachings, Saint John Cross especially focuses on two forms of "purgations," or "dark nights," through which every soul must pass in order to achieve perfection in life.

This book attempts to present the profound theology of Saint John of the Cross found in these four great works in a way that is understandable and accessible to most readers. The reader will find an overview and summary of the most essential lessons of the spiritual life as well as practical advice for growing in holiness.

May Saint John, master of the spiritual life, pray for you on your journey toward the glory of Divine Union.