The article presents an epistemological characterization of ethics, in an Aristotelian key, in which it is understood as a practical knowledge that studies the different forms of life in pursuit of good or happiness; focused on the consideration of human actions and decisions, seen in relation with the ways of being anchored in complex community life worlds. Hence, it is insisted that the determining factor is the use of practical rationality. A practical rationality that has as models the dialectical reasonings that appear in both the rhetoric and the poetics; in which the key operations are argumentation, interpretation and narration and in which importance is given to passions or emotions, because they are considered decisive in the effo...