Considering the recent financial capitalism development and the ethical ‘collapse’ in this specific sphere of economic action as the new figure of classical contest between ethics and economics, this paper is intended to be a record of the sources both of ethics and economics division and unity in the contemporary conceptual horizon. In particular, the aim is to show how difficult it is for our dominant views in ethics, coming out from a long way of antithesis against the instrumental rational pattern of economic action, to focus attention on the real Unitarian model – the Aristotelian one – that embeds economics inside ethics. By this also, Amartya Sen’s proposal of an Aristotelian connection between ethics and economics is analyzed and criticized because of his subterranean link with the divisionistic contemporary positions.