Jurgen von Hagen is Professor of Economics at the University of Bonn, Germany, and a member of the German Academy of Sciences. His research focuses on monetary and macro-economics. As a Protestant preacher, he also has a keen interest in theology and its intersection with economics.
Michael Welker is Senior Professor for Systematic Theology at the University of Heidelberg, He is a member of the Heidelberg Academy of Science and Humanities and a corresponding member of the Finnish Academy of Arts and Sciences. He has held guest-professorships at numerous universities, including Princeton Theological Seminary, Harvard Divinity School and Cambridge Divinity School. He is the author or editor of around fifty books.