<p>Joseph Beuys's work continues to influence and inspire practitioners and thinkers all over the world, in areas from organizational learning, direct democracy and new money forms to new art pedagogies and ecological art practices. Here, in dialogue with Volker Harlan - a close colleague, whose own work also revolves around understandings of substance and sacrament that are central to Beuys - the deeper motivations and insights underlying 'socia...