In this text, I try to examine in sufficient detail what is the exact function that Aristotle ascribes to deliberation in the Nicomachean Ethics (NE). More specifically, I intend to evaluate, in the light of the arguments built along selected passages from books II, III and VI of that work, how and to what extent deliberation plays an important role in the achievement of virtuous actions and in the consolidation of the virtuous character. Proceeding from an argumentative analysis that intends (...) to elucidate how some of the central concepts of Aristotelian ethical reflection are articulated, I shall defend, in the last part of my exposition, the interpretation according to which the function of deliberation is to produce long-term purposes that determine courses of action and that, if implemented accordingly to the orthos logos by the moral agent endowed with phronēsis, achieve the end of virtue of character. (shrink)