Although Troeltsch is often read as merely a voice of criticism in theology, this book argues that he makes an important constructive contribution to theology, namely, an eschatological conception of the Absolute. Two points of clarification are made in order to curtail skepticism in areas where misconceptions about Troeltsch’s theological project may arise. First, the book distinguishes Troeltsch’s critique of absoluteness in the history of religions from his idea of the Absolute itself, which is the proper focus of the current study. Second, the coherence of Troeltsch’s theological project, even into his late work on the philosophy of history and his posthumous lectures on world religions, is explained.