Simon Robertson completed a PhD at the University of St Andrews in 2005. He has worked at several universities in the UK, most recently Cardiff University (2012-18). His main research interests are in ethics, normativity, risk, and Nietzsche. He has published in each of these fields, in journals and edited collections, and is the editor of Spheres of Reasons (Oxford 2009) and coeditor with Christopher Janaway of Nietzsche, Naturalism, and Normativity (Oxford 2012). He is now an independent scholar.