Study of the major theological concepts of Christianity, in an attempt to understand when and why these concepts became part of the Christian legacy. We will study the theology of the Bible, the proclamations of the councils, the authoritative decisions of the churches, and the writings of the most influential Christian authors, up to our own day. For each of the focal points we will consider the historical and cultural contexts, and listen to the various participants in the debates, winners and losers. The course aims to clarify the main topics that are shared by all Christians as well as the topics that have led to division of Christianity in the past and to ongoing debate in the present.