Did the Greeks believe in their mythology? The answer is difficult, for “believe” means so many things… Not everyone believed that Minos continued to be a judge in Hell or that Theseus defeated the Minotaur, and they knew that poets “lie.” Nevertheless, their manner of not believing gave reason for concern, for Theseus was no less real in their eyes. It is simply necessary to “purify myth with reason’“ and to reduce the biography of the companion of Hercules to its historic kernel. As for Minos, after a prodigious mental effort, Thucydides extracts the same kernel from his subject: “Of all those whom we know only by hearsay, Minos was the first to have a fleet.” The father of Phaedra, the husband of Pasiphaë is nothing more than a king who was master of the sea. The purification of the mythical by the logos is not an episode in the eternal struggle, from the beginning to Voltaire and Renan, between superstition and reason, a struggle which was the glory of Greek genius. The myth and the logos, despite Nestle, are not simple opposites like truth and error. Myth was a subject of serious reflections, and the Greeks had not yet finished with it six centuries after the Sophist movement which has been called their Aufklärung. Far from being a triumph of reason, the purging of myth by logos is a very dated program whose absurdity is surprising. Why did the Greeks make themselves unhappy for nothing by seeking to separate the wheat from the chaff instead of rejecting in one gesture the fantasy of both Theseus and the Minotaur, the very existence of a fabulous Minos as well as the implausible qualities with which the myth endows this Minos?