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 between her early poetic writings to her later political applied 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. By considering each of her views in relation to the entirety of her work, readers will come to appreciate the richness of her thought.