The Autobiography of St. Ignatius recounts, with striking restraint, the inward pilgrimage of Ignatius of Loyola from wounded courtly soldier to disciplined servant of God and founder of the Society of Jesus. Dictated late in life, the work is less a conventional memoir than a spiritual itinerary, tracing conversion, discernment, pilgrimage to Jerusalem, studies in Paris, and the gradual formation of a new apostolic vocation. Its plain, lucid style reflects the devotional sobriety of early modern Catholic reform and stands beside confession, hagiography, and spiritual instruction. Ignatius, born Íñigo López de Loyola in 1491, was shaped by chivalric ambition before a cannonball injury at Pamplona forced prolonged convalescence and profound self-examination. His reading of saints' lives and the life of Christ redirected his imagination toward holiness, discipline, and service. The Autobiography bears the marks of that transformation, illuminating the experiences that also informed his Spiritual Exercises. This book is recommended to readers interested in Christian spirituality, Renaissance religious culture, and the formation of disciplined moral purpose. It offers not self-display, but a rare anatomy of vocation: concise, humble, and enduringly instructive.