John William Miller's radical revision of the idealistic tradition anticipated some of the most important developments in contemporary thought, developments often associated with thinkers like Heidegger, Benjamin, Foucault, Derrida and Rorty. In this study, Vincent Colapietro situates Miller's powerful but neglected corpus not only in reference to Continental European philosophy but also to paradigmatic figures in American culture like Lincoln, Emerson, Thoreau and James. The work is not simply a study of a particular philosopher or a single philosophical movement (American idealism). It is rather a philosophical confrontation with a cluster of issues in contemporary life. These issues revolve around such topics as the grounds and nature of authority, the scope and forms of agency, and the fateful significance of historical place. These issues become especially acute given Colapietro's insistence that the only warrant for our practices is to be found in these historically evolved and evolving practices themselves.