Introduction: Economics as a moral science -- 'The economic' and chrematistics -- An ontological analysis of aristotle's oikonomike and chrematistics -- Aristotle's science of economics -- 'The economic' and ethics -- 'The economic' and politics -- Eudaimonia and the economics of happiness -- Capabilities, incommensurability, and practical comparabitity -- Aristotle on causation and explanation, and current social and economic science -- Conclusion.