Karl Rahner was the most influential Catholic theologian of the 20th century. His writings helped prepare the way for Vatican II and did much to shape the Church in the post-conciliar period. Because of his intellectual influence, however, his significant contributions to spirituality are often overlooked. In this book, a colleague of Rahner's (and fellow Jesuit) presents short passages of Rahner's work with clear and engaging explanation of Rahner's Christian mystical vision.