Originally published: 2007

Foreword / Ken Wilber -- Far too personal preface -- Introduction: the Call -- Preparing for the journey: Mystics without monasteries; Approaching the castle, readying the soul; Crossing the drawbridge, the key to the castle -- Soul's journey: First mansion, the power of prayer, humility, chaos, and divine seduction; Second mansion, God in the details, inner vision and soul companions; Third mansion, surrender, the defeat of reason, the presence of God; Fourth mansion, the mystical heart; Fifth mansion, dissolving into holiness, from silkworm to butterfly; Sixth mansion, essential wisdoms and the final fire; Seventh mansion, divine marriage, healing, and reentering the world

Draws on the mystical writings of St. Teresa of Ávila to explore how to maintain a connection with the divine, in a guide that compares the human soul to a crystal castle with rooms representing various stages of spiritual development