The Nicomachean Ethics is not only one of Aristotle's most famous works, one of those which best testify to his philosophy today. It is also, more generally, one of the great texts in the history of thought. What is the activity that, ultimately, gives meaning to human life? This is the question that Aristotle begins by raising, knowing that the human being is a rational being, capable of developing multiple projects. One cannot read – or reread – the Nicomachean Ethics without feeling how the answer to this question leads the philosopher to the discovery of man himself, in whom, according to Aristotle, the beast and the god are mysteriously united. This translation clearly identifies the structure and articulation of Aristotle’s text. It is accompanied by a notes system provided which takes into account the main analyzes and questions to which the text was the subject.