What do the ancient philosopher, one of the greatest speakers of ancient Greece, Gorgias, and Ludwik Fleck, a microbiologist, immune mechanism researcher and collaborator of Rudolf Weigl, the discoverer of a vaccine for typhus, who lived over twenty centuries later, have in common? Apart from the sphere of philosophical investigations, they are connected by the figure of an Italian scientist, professor of philosophy at the University of Catania, who, during his stay in Poland at the Polish Institute of Advanced Studies (PIASt), conducted research on both remarkable figures. Professor Francesco Coniglione has translated into Italian all of Ludwik Fleck's epistemological essays. At the same time, he conducted research on Gorgias which, in his own words, complemented Fleck's reflections, for whom what matters in science is not textbooks, but the concrete practice of scholars, initiation into a style of thinking, and thus belonging to a wider community. Similarly, for Gorgias, no rigid codification of rhetoric, let alone virtue, is possible; it can only be learned by practising good orators and studying their speeches. As for Fleck in relation to science, for Gorgias too, mastery of the rhetorical art, and above all the ability to seize the right moment to intervene, to adapt one's discourse to καιρός, i.e. to the most favourable circumstance, is what one learns through practical experience, by example, and is different from εἰκός, which belongs to oratorical theory and is therefore an intellectual order. Professor Coniglione's stay in Poland resulted in the volume 'Ludwik Fleck. Stili di pensiero. La conoscenza scientifica come creazione sociale' (ed. F. Coniglione, Mimesis, Milan-Udine), but not only. Also excellent scientific contacts and interpersonal relations. As Professor says "PIASt is an ideal place for research, concentration, intellectual discourse. The contacts I was able to establish with other scientists from the Polish Academy of Sciences, but also from universities, mean a lot to me. I hope that there will still be an opportunity to return to Poland and carry out further interesting scientific projects here.