This book is a much-acclaimed work in philosophy which foregrounds and explores the idea of the Other in relation to the Self. The author wrestles with the tension between the pursuit of individual autonomy and a commitment to the common good. In this book, he makes the case that much of Western philosophy to that point had been too solitary and cerebral, ignoring the importance of relations and action. More than half a century since it was first published, this book still yields valuable insights for its readers.