A fourth way of dealing with mythology is to rationalize it, by assuming that all the marvellous stories told about the gods and heroes had historical foundation in the past. Myths, according to this method, become the reminiscences of actual facts, the biographies of persons, which in course of time have lost their positive truth. In order to recover and reconstitute that truth, it is necessary to reduce them to prose. Thus Hecatæus, who was one of the earliest among the Greeks to attempt this interpretation, declared that Geryon was a king of Epirus, and that Cerberus was a serpent haunting the caverns of Cape Tænarus. Herodotus, in like manner, explained the sacred black dove of Dodona by saying that she was a woman, who came from Egyptian Thebes, and introduced a peculiar cult of Zeus into Hellas. After the same fashion, Python, slain by Phoebus, was supposed to have been a troublesome freebooter. Æolus was changed into a weatherwise seaman, the Centaurs into horsemen, Atlas into an astronomer, Herakles into a strong-limbed knight-errant. It was when the old feeling for the myths had died out among the learned, when physical hypotheses were adopted for the explanation of the heavens and the earth instead of the religious belief in nature-deities, and when prose had usurped on poetry, that this theory was worked into a system. Euhemerus, the contemporary of the Macedonian Cassander, wrote a kind of novel in which he made out that all the gods and heroes had once been men. Ennius translated this work into Latin, and the rationalizing method was called Euhemerism. The hold which it has retained upon the minds of succeeding ages is sufficient to show that it readily approves itself to the understanding. It seems to make everything quite smooth and easy. When, for instance, we read the revolting legend of Pasiphaë we like to fancy that after all she only fell in love with a captain called Taurus, and that Dædalus was an artful go-between. Unfortunately, however, there is no guide more delusive than Euhemerism. It destroys the true value of mythology, considered as the expression of primitive thought and fancy, reducing it to a mere decayed and weed-grown ruin of prosaic fact. Plato was right when he refused to rationalize the myths, and when, by his own use of myths, he showed their proper nature as the vehicle for thoughts as yet incapable of more exact expression. At the same time it would be unphilosophical to deny that real persons and actual events have supplied in some cases the subject-matter of mythology. The wanderings of Odysseus, the Trojan War, the voyage of the Argonauts, the kingdom of Minos, the achievements of Herakles, have, all of them, the appearance of dimly preserved or poetized history. Yet to seek to reconstruct history from them, "to dig for a supposed basis of truth" in them, is idle. The real thing to bear in mind is that great men and stirring events must have been remembered even in the mythopoeic age,