The virtue named σϖφροσύνη, which designates « self-restraint », « temperance », « prudence », « circumspection », sometimes condensed in the term « wisdom », is first a moral virtue. In other respects, this word signifies « right senses » in contrast with « frenzy » (either god-inspired or as a part of illness). But the notion of σϖφροσύνη has also a meaning in literary criticism. And in this very context, it presents several employments. One of these is stylistic. (...) Another regards narrative structure and content : this is the subject of the present study. After I have referred to the use of this narrative concept in Plato, I shall demonstrate that its interpretation by Aelius Aristides allows, with that of Maximus of Tyre, to understand Longus’ prayer at the end of the prologue to the Pastorales. This interpretation sheds light specially on the process of a significant episode in the plot of this novel. (shrink)