The Great Chain of Being has been recognized for fifty years as the masterpiece of the History of Ideas movement in America. Lovejoy's work stimulated deeper research into our heritage, which has demonstrated that the idea of the chain of being has not lost its vitality. However, Lovejoy would probably be surprised that hierarchy is now defended in philosophy of science, in ontology and metaphysics, in ethics and aesthetics, and in philosophical anthropology. This volume presents concepts of hierarchy and the great chain of being from Plato, Aristotle, Plotinus, medieval and Renaissance thinkers, Hindu philosophy, and authors of the twentieth century. This volume represents the ideas of twenty scholars, among whom are Dominic O'Meara, Ronald Hathaway, Ewert Cousins, John Sommerfeldt, Lewis Ford, David Blumenthal, and Marion and Paul Kuntz. The editors have compiled a bibliography of four hundred and fifty items and an index of names, places, and concepts which allow the reader immediate access to the variety as well as the unity of ideas.