This book is the first of two volumes that, together, present for the first time a comprehensive collection of three decades of the theoretical writings of artist and theorist Bracha L Ettinger. Edited and introduced by Griselda Pollock they provide a systematic anthology of Ettinger's path-breaking and influential concept of Matrixial subjectivity-as-encounter and jointness-in-difference, and chart her radical intervention in aesthetics, ethics and theories of subjectivity far beyond classical feminist and current gender/queer theory.This first volume includes the writings in which Ettinger elaborates her original concepts of Matrixial space-time and metramorphosis, fascinance, wit(h)nessing, resonance, transcryptum, com-passion, self-fragilization and resistance, co-emergence and copoiesis transform theories of the subject, Eros, alliance and love, sexual difference, alterity, relationality, trauma and violence. Her critical dialogue with theorists including Levinas, Lacan, Lyotard and Deleuze & Guattari, Butler, Cavarero and Irigaray is evident here.A leading authority on Matrixial theory, Griselda Pollock provides explanatory prefaces to each chapter and a lengthy introduction that situates Ettinger's work in relation to socio-psychoanalytical theory and practice and current social and philosophical debates. Ettinger's interlacing of psychoanalysis, ethics, and aesthetics can be seen here to address some of the deepest challenges of our social, cultural and political existence today.