One field in ethics that has been developed during recent decades is virtue ethics, represented most importantly by Alasdair MacIntyre's work After Virtue. Virtue ethics is not opposed to principle-based ethics, but rather complements its task and develops it more fully. In the field of US bioethics, this option has proved to be even more fruitful, especially in the work of Edmund Pellegrino and David Thomasma. Virtue ethics is also being reappraised in relation to the ethics of organisations and business. (...) It is considered that the best way of running a company does not depend solely on a group of ethical principles or agreed criteria, but on the effective exercise of certain qualities of character. Indeed, minimal ethics do not guarantee the excellence of organisations, or even their correct development. They guarantee certain standards of coexistence, but this is not sufficient to carry forward a collective enterprise in a creative way. It is impossible to achieve the aims of an organisation without ambition, magnanimity, humility, prudence, responsibility and courage. This group of intangible elements are virtues. This article explores the process of decision-making in the light of Aristotelian ethics, in particular his work _Nicomachean Ethics_. Making decisions is a common task on the managerial agenda. The decisions of a manager affect individuals, the future of the organisation and, of course, they have consequences for the organisation and its surroundings. Aristotle dedicates Book III of the work in question to studying the art of deliberation and examining which virtues must be taken into account when reaching the best decision. Aristotle tells us that we deliberate about things that are within our power and can be done. There can be no deliberation upon exact and sufficient knowledge; however, we deliberate upon the things that are brought about by our own efforts, although not always in the same way. Leading an organisation is not a mechanical matter, but rather a process that requires creativity and responsibility. There are many different ways of doing it. Following the Aristotelian doctrine, this article aims to examine the elements that must be taken into consideration for correct decisions to be made. The following virtues play a fundamental role in this process: prudence, fortitude, justice and temperance, referred to below as called cardinal virtues. (shrink)