Luce Irigaray is one of the most influential philosophers and theorists in the field of feminist thought, and her work is considered both revolutionary and controversial. This volume offers the first critical assessment of the relation of her early critical and poetic writings to her later political and practical philosophy. Contributors examine how the question of sexual difference has unfolded in a wealth of different directions in Irigaray's later work, focusing on the areas of nature and technology, social and political theory and praxis, ethics, psychoanalysis, and phenomenology. They also address whether there has been a radical conceptual "turn" in Irigaray's thought by exploring the idea of a "turn" as a return to themes that have concerned her all along. The essays contend that Irigaray's writings should be read, criticized, or promoted within the context of her overall philosophical project.