This book explores the significance of psychoanalyst Donald Winnicott's ideas for contemporary debates about care. Locating Winnicott in relation to a range of fields, including psychology, philosophy, sociology, critical theory and feminist theory, it examines the implications of his thinking for understanding and transforming the relationship between care and society. Winnicott was unique amongst psychoanalysts for the emphasis he placed on care in the development of subjectivity. The book unpacks Winnicott's understanding of care and assesses its relevance for conceptions of social responsibility, justice and transformation. In a world where care is in crisis, how might we theorise the conditions necessary for the development of caring subjectivities, and is it possible to infer a relationship between those conditions and progressive social change? This unique book will be of interest to readers in psychosocial studies, politics and anyone concerned with thinking about the relationship between care and social transformation.