In this volume, the third and last of his Systematic Theology , Paul Tillich sets forth his ideas of the meaning of human life, the doctrine of the Spirit and the church, the trinitarian symbols, the relation of history to the Kingdom of God, and the eschatological symbols. He handles this subject matter with powerful conceptual ability and intellectual grace. The problem of life is ambiguity. Every process of life has its contrast within itself, thus driving man to the quest for unambiguous life or life under the impact of the Spritual Presence. The Spritual Presence conquers the negativities of religion, culture, and morality, and the symbols anticipating Eternal Life present the answer to the problem of life. This book is about Life and the Spirit History and the Kingdom of God.In this volume, the third and last of his Systematic Theology, Paul Tillich sets forth his ideas of the meaning of human life, the doctrine of the Spirit and the church, the trinitarian symbols, the relation of history to the Kingdom of God, and the eschatological symbols. He handles this subject matter with powerful conceptual ability and intellectual grace. Paul Tillich  (1886-1965) held distinguished positions at several German universities before immigrating to the United States in 1933 where he taught at Harvard University and the University of Chicago. His many publications include  The Courage to Be , a three-volume treatise entitled  Systematic Theology , and  Theology of Culture .