 Arendt, Hannah |  authority |  coercion |  democracy |  feminist philosophy, interventions: political philosophy |  Habermas, Jürgen |  Hobbes, Thomas: moral and political philosophy |  justification, political: public |  Kant, Immanuel: social and political philosophy |  legal obligation and authority |  Locke, John: political philosophy |  perfectionism, in moral and political philosophy |  political obligation |  public reason |  Rawls, John |  social contract: contemporary approaches to |  sovereignty 