Few philosophers are as widely read or as widely misunderstood as Nietzsche. In this book, Tsarina Doyle sets out to show that a specifically Kantian-informed methodology lies at the heart of Nietzsche's approach to epistemology and metaphysics. The author claims, contentiously, that both Nietzsche?s early and late writings may be understood as responses to Kant?s constitutive-regulative distinction at the level of epistemology and to his treatment of force and efficient causality at the level of metaphysics.