Spiritual guidance is the serious business of Mount Athos, the principal service that the Fathers offer to each other and to the world. Athonites have been purveyors of spiritual guidance for more than a thousand years in a tradition that goes back to the fourth-century desert fathers. The recent monastic renewal on the Mountain is testimony to the Fathers' continuing power to attract disciples and pilgrims to listen to what they have to say. The papers included in this volume examine some of the many aspects of this venerable tradition, as it has developed on Mount Athos, and as it has devolved upon monks and nuns, spiritual fathers and confessors, lay men and women, in other parts of Greece and in the world. Most of the papers were originally delivered at a conference convened by the Friends of Mount Athos at Madingley Hall, Cambridge, in 2013.