The persuasiveness of assertibles and arguments in Ancient Stoicism

We begin with an analysis of the persuasiveness of assertibles and arguments in the texts and fragments of Ancient Stoicism, with a particular focus on those in which Stoic logic is presented as the tool to avoid the persuasiveness of sophisms and the Stoic sage as the one who can efface this persuasiveness by his expertise in dialectics. We then critically assess the contemporary consensus on the interpretation of these texts (notably in Chiaradona, Sedley and Tieleman), according to which Chrysippus is interested in extra-logical forms of discourse. Tieleman further argues that Chrysippus uses persuasive premises for constructive purposes. We reject the thesis concerning Chrysippus' recognition of extra-logical truths, on the basis of the Stoic ideal of the sage, concluding instead that in Stoicism, (1) pithanon refers primarily to false assertibles, arguments and presentations and (2) the Stoic sage cannot be persuaded, but he can persuade his students in order to prepare their souls to receive the Stoic doctrines.