The Interior Castle

by Saint Teresa (of Avila)

Teresa of Avila, a Carmelite nun, wrote with passionate sensuality about her devotion to God. Because she suffered from long periods of serious illness, her inner life became devoted to mysticism and supernatural phenomena, many of which she explored through her writing. The Interior Castle documents the progression of the soul through the "mansions of a crystal castle" to find a union with God at the center.