The Interior Castle

St. Teresa of Avila’s classic guide to contemplative prayer uses the metaphor of an interior castle with successive chambers to describe the soul’s journey toward union with God. Written in the 16th century and central to Catholic mystical theology, it offers practical reflections on prayer, discipline, and spiritual transformation.

St. Teresa of Avila (1515–1582) was a Spanish Carmelite reformer and one of the major mystics of Christian literature. Her writings, including The Interior Castle and The Life of Teresa of Jesus, are foundational texts on contemplative prayer, spiritual experience, and the disciplined mystical life.