R. Kevin Hill is a professor of philosophy at Portland State University. He is the author of Nietzsche's Critiques: The Kantian Foundations of His Thought (Oxford, 2003) and Nietzsche: A Guide for the Perplexed (Continuum, 2007). He is the editor/co-translator of the posthumous collection of Nietzsche's notes known as The Will to Power (Penguin, 2017), as well as the editor/translator of Nietzsche's Joyous Science (Penguin, 2018).