Manuel Dries is Lecturer of Philosophy at the Department of Philosophy, The Open University, and College Lecturer at St Hilda's College, University of Oxford. His main interests are in nineteenth and twentieth-century post-Kantian philosophy, contemporary philosophy of mind, and aesthetics. P. J. E. Kail was educated at Keele University and the University of Cambridge, and has held positions at the University of Cambridge, the University of Edinburgh, and the University of Oxford. His main interest is in eighteenth century British philosophy and more recently on questions concerning naturalism. He has published on the issue of naturalism in the philosophies of Hume and Nietzsche.