Paul Tillich was a German-American theologian and Christian existentialist philosopher. Tillich was – along with his contemporaries Rudolf Bultmann (Germany), Karl Barth (Switzerland), and Reinhold Niebuhr (United States) – one of the four most influential Protestant theologians of the 20th century. Among the general populace, he is best known for his works The Courage to Be (1952) and Dynamics of Faith (1957), which introduced issues of theology and modern culture to a general readership. Theologically, he is best known for his major three-volume work Systematic Theology (1951–63), in which he developed his "method of correlation": an approach of exploring the symbols of Christian revelation as answers to the problems of human existence raised by contemporary existential philosophical analysis.
If you want to know why PhD students in theology are often required to learn German, then read this book. I can only hope that its ideas were easier to access in its original language. That being said, there are some gems in here.
If you've never read Tillich before or don't have a grasp of his ideas, I'm not sure this is the right book to start. But then again, maybe it is. It's a fairly early, formative work. And Tillich isn't the easiest theologian to read and understand anyway. And anyplace is as good as any other place, I suppose.
Dense, dense, dense. I began to skim this book halfway through. Few could love Tillich more than I yet the translation of his earlier thought from German to English does not come across well. In learning English he was forced to clarify many of his core concepts, thankfully.