Gaetano Lettieri is Full Professor of History of Christianity and Director of the Department of History, Anthropology, Religions, Art History, Media and Performing Arts at Sapienza University of Rome. He is specialized in the history of Christian theological thought from the origins to the contemporary age and the genesis of speculative theology at Alexandria. Maria Fallica (Ph. D., Sapienza) is a Post-Doc researcher in the history of Christianity at Sapienza University of Rome. Her research interests lie in the reception of the Fathers of the Church in the modern age, the history of the Reformations, the Italian Reformation of the 16th century, the history of methodism. Anders-Christian Jacobsen is Full Professor of Theology at Aarhus University. His research interests are Greek and Latin Patristics, reception of Patristic theology, theology of the Reformations, and modern systematic and constructive theology.