Christoph Markschies is Professor of History of Theology at Heidelberg and member of the Academy of Sciences in Berlin-Brandenburg. He has been honored with the "Leibniz Prize" awarded by the German Research Association. He is the author of numerous books on early Christianity, Gnosticism and the history of theology. Among them, Valentinus Gnosticus (1992), Gnosis und Manichäismus (1994), Arbeitsbuch Kirchengeschichte (1995), gibt eine Theologie des est Gotisches Kathedrale? (1995), Ambrosius von Mailand und die Trinitätstheologie (1995), Alta Trinita Beata. Studien zur altkirchlichen Gesammelte Trinitätstheologie (2000) and structures of ancient Christianity: A Journey Between Worlds (2001).