From the Greek ethos, custom, way of being and acting, character, personality. Discipline of the philosophy that studies the duty be of the behavior human looking for the foundations theoretical of this duty. The first systematic study of this topic was ethics Aristotle Nicomachean in the 4TH century b. C. Aristotle based the criteria of the good work in the happiness individual and collective ( eudaimonia ) whose essential characteristic places in the knowledge.
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