This thesis argues that Friedrich Nietzsche’s notion of world and self as ‘will to power and nothing besides’ offers a highly productive interpretive lens or ‘grid of intelligibility’ for understanding the ethical implications of Michel Foucault’s middle and late works on power and subjectivity. For if the late modern era is marked by a sustained and pervasive incredulity toward metanarrative, it is also the historical site for the reappearance and widespread acceptance of a very ancient metanarrative – the Heraclitean view of material reality as continual flux. Inasmuch as Nietzsche’s will to power philosophy is grounded in this Pre-Socratic worldview, his works and those of his devotee Foucault ma...