The Italian philosophical debate in recent years has highlighted many times as the prospects of today's analytic philosophy are closely linked to the recovery of the pragmatist tradition. As can be seen from recent studies on the history of ethics, in particular the volume of Sergio Cremaschi (Ethics of the twentieth century. Following Nietzsche, Carocci 2005), this trend of research can be traced back as early as 1947, when Clarence Irving Lewis, An Analysis of Knowledge and Valuation, pulled in key ethics analytic philosophy with the conceptual pragmatism. In this paper we tried to find the link that allows you to legitimize this approach. Starting from the lewisiana of knowledge, we felt that this link is to detect intentionality, ie th...