Education: Eberhard-Karls-Universität, Tübingen: Katholische Theologie, Sozialpädagogik (Vordiplom); GraduateFranciscan School of Theology: Catholic Theology; Philadelphia: Religious Studies (M.A., Ph.D.); Ōbirin University, Tokyo: dissertation research; Nanzan Institute for Religion and Culture, Nanzan University, Nagoya: post-doctoral research