The Three Ways of the Spiritual Life by Fr. Réginald Garrigou-Lagrange

For centuries, Christian wisdom has illuminated the path to spiritual perfection through the "Three Ways" or stages of the interior life: the Purgative, Illuminative, and Unitive. This venerable framework, deeply rooted in the teachings of Church Fathers and Doctors like St. John of the Cross, St. Teresa of Avila, and St. Thomas Aquinas, offers one of the most profound and effective means to enliven and understand Christian spiritual growth, guiding souls towards an ever-deepener union with God.