Logos w Sofiscie Platona

Résumé En

- Trying to prove against the sophists that the false speech exists, Plato gives us progressively and for the first time, through this dialogue, a clear definition of Logos as “proposition”, and let us discover the fundamental role played by the megista genè in order to explain the false and the true speech.In other terms, the originality of the Sophist lies in showing the semantical, syntaxical, logical and eidetical (or thematical) conditions of a correct or a true logos where “being” and “alterity”, characterized by a certain dynamism – which is new comparing to the classical dialogues – defi ne the complexity of speech in general and let us grasp the complexity of reality.Through the importance assigned to alterity, to multiplicity and to the “power of communication” (dunamis koinônias in 251e 8, dunamis epikoinonias in 252d 2–3) of eidè and genè, ordered by the science of the philosopher (dialectic), Plato off ers a new ontology related to his accomplished theory of langage where “relation” seems central.- Cette étude a fait l'objet d'une conférence intitulée "Le logos dans le Sophiste de Platon" à l'Université de Vérone (Italie) à l'invitation de F. Marcolungo.