The complex philosophical theology of Paul Tillich (1886-1965), increasingly studied today, was influenced by thinkers as diverse as the Romantics and Existentialists, Hegel and Heidegger. A Lutheran pastor who served as a military chaplain in World War I, he was dismissed from his university post at Frankfurt when the Nazis came to power in 1933, and emigrated to the United States, where he continued his distinguished career. This authoritative Companion...