Through extensive readings in philosophical, legal, medical, and imaginative writing, this book explores notions and experiences of being a person from European antiquity to Descartes. It offers quite new interpretations of what it was to be a person--to experience who-ness--in other times and places, involving new understandings of knowing, willing, and acting, as well as of political and material life, the play of public and private, passions and emotions. The trajectory the author reveals reaches from the ancient sense of personhood as set in a totality of surroundings inseparable from the person, to an increasing sense of impermeability to the world, in which anger has replaced love in affirming a sense of self. The author develops his analysis through an impressive range of authors, languages, and texts: from Cicero, Seneca, and Galen; through Avicenna, Hildegard of Bingen, and Heloise and Abelard; to Petrarch, Montaigne, and Descartes.