The aim of the paper is to show how a contemporary dynamic approach to logic has built up anew the links between logic and rhetoric established by Aristotle in the framework of dialectics-at least in the context of the Topica. Dialectics is understood here as a kind of codified debate meant to furnish a methodological instrument for the theory of scientific knowledge. The claim is that the contemporary reconstruction of dialectics conceives rhetoric not only as the place where literary forms of reasoning and logic meet but also as the place where logic and scientific knowledge meet.