Christoph is Professor and Director of Practical Philosophy and Ancient Philosophy at the University of Bonn. His work focuses on ancient philosophy and contemporary practical philosophy. He is particularly interested in the writings of Plato, Aristotle, and Kant. His systematic interest lies mainly in contemporary moral philosophy, political philosophy, and the theory of action. In his monographs, he has dealt with Plotinus, Augustine, and the ancient art of living. In 2003/2004, Christoph was a fellow at the Wissenschaftskolleg zu Berlin, and in 2008/2009, he was a senior fellow at the Forschungsinstitut für Philosophie Hannover (FIPH). He is also the editor of the journals Archiv für Geschichte der Philosophie and Gnomon.

At THE NEW INSTITUTE Christoph was involved in the program “The Human Condition in the 21st Century“.