It is curious to observe in how many various ways these two opposite principles were kept for a time from open conflict, and how long the heathen temples resisted the enemy which was slowly and imperceptibly undermining their very foundations. In Greece this mortal element, inherent in all gods, was eliminated to a great extent by the conception of heroes. Whatever was too human in the ancient legends told of Zeus and Apollon was transfered to so-called half-gods or heroes, who were represented as the sons or favorites of the gods, and who bore their fate under a slightly altered name. The twofold character of Herakles as a god and as a hero is acknowledged even by Herodotus, and some of his epithets would have been sufficient to indicate his solar and originally divine character. But, in order to make some of the legends told of the solar deity possible or conceivable, it was necessary to represent Herakles as a more human being, and to make him rise to the seat of the Immortals only after he had endured toils and sufferings incompatible with the dignity of an Olympian god. We find the same idea in Peru, only that there it led to different results. A thinking, or, as he was called, a freethinking Inca[69] remarked that this perpetual travelling of the sun was a sign of servitude,[70] and he threw doubts upon the divine nature of such an unquiet thing as that great luminary appeared to him to be. And this misgiving led to a tradition which, even should it be unfounded in history, had some truth in itself, that there was in Peru an earlier worship, that of an invisible Deity, the Creator of the world, Pachacamac. In Greece, also, there are signs of a similar craving after the "Unknown God." A supreme God was wanted, and Zeus, the stripling of Creta, was raised to that rank. He became God above all gods--ἁπἁντων κὑριος as Pindar calls him. Yet more was wanted than a mere Zeus; and thus a supreme Fate or Spell was imagined before which all the gods, and even Zeus, had to bow. And even this Fate was not allowed to remain supreme, and there was something in the destinies of man which was called ὑπἑρμορον, or "beyond Fate." The most awful solution, however, of the problem belongs to Teutonic mythology. Here, also, some heroes were introduced; but their death was only the beginning of the final catastrophe. "All gods must die." Such is the last word of that religion which had grown up in the forests of Germany, and found a last refuge among the glaciers and volcanoes of Iceland. The death of Sigurd, the descendant of Odin, could not avert the death of Balder, the son of Odin; and the death of Balder was soon to be followed by the death of Odin himself, and of all the immortal gods.