Birgit Sandkaulen Birgit Sandkaulen is Professor of Philosophy and Director of the Research Center for Classical German Philosophy / Hegel-Archive at Ruhr-University Bochum, Germany. Her research focuses especially on Hegel and Jacobi. She is the editor of Jacbi's Correspondence and co-editor of a new "Digital Jacobi Lexicon" at the Saxon Academy of Sciences and Humanities in Leipzig. She has published several books on Jacobi, including Grund und Ursache. Die Vernunftkritik Jacobis (2000). Read More Read Less