William Hasker (Ph.D., University of Edinburgh), is Professor Emeritus of Philosophy at Huntington University in Huntington, Indiana, where he taught from 1966 until 2000. His main interests in philosophy are philosophy of religion and philosophy of mind. He is the author of Metaphysics (1983), God, Time, and Knowledge (1989), The Emergent Self (1999), Providence, Evil, and the Openness of God (2004), and The Triumph of God Over Evil (2008).

This is the first full-length study of the doctrine of the Trinity from the standpoint of analytic philosophical theology. William Hasker reviews the evidence concerning fourth-century pro-Nicene trinitarianism in the light of recent developments in the scholarship on this period, arguing for particular interpretations of crucial concepts. He then reviews and criticizes recent work on the issue of the divine three-in-oneness, including systematic theologians such as
Barth, Rahner, Moltmann, and Zizioulas, and analytic philosophers of religion such as Leftow, van Inwagen, Craig, and Swinburne. In the final part of the book he develops a carefully articulated social doctrine of the Trinity which is coherent, intelligible, and faithful to scripture and
tradition.