S.J. Brian McDermott & Saint Ignatius of Loyola 
The Spiritual Exercises of Saint Ignatius [EPUB ebook] 

””The Spiritual Exercises’ are a series of Christian meditations, thought experiments, and prayers written by Saint Ignatius of Loyola. Ignatius, a 16th-century Spanish priest and theologian, was the founder of the Society of Jesus (Jesuits), whose aim is to serve the Pope as missionaries. Designed to be executed over a period of four weeks, the exercises are intended to help participants learn the will of God, and prepare them for a lifelong commitment to Jesus. A classic cornerstone of western Christian thought, the Exercises has been widely shared and re-published. ”’