Even if data had not already been produced which establishes the existence of two religious cults in ancient Mexico, the respective symbols of which were the sun and the moon, the presence of two pyramids at Teotihuacan would suggest the existence of a division of some sort. The origin of these great and imposing structures is shrouded in mystery, but it is generally conceded that they must have been built long before the comparatively modern inhabitants of the valley of Mexico, the wandering Aztecs, had taken up their abode in the midst of the salt lagoons. The erection of two pyramids, however, proves that their builders had already practised the cult of the middle of heaven and earth, or Above and Below, and of the Four Quarters for so long a time, that there had been a separation of religions and government into two almost independent parts, each complete in itself. In the light of the testimony produced it is safe to infer that for an indefinite time the rival cults developed side by side until dissension and consequent disintegration followed. The Mexican state was the outcome of a later effort to reorganize and rebuild an integral whole on the ancient plan, the knowledge of which had been preserved and handed down. As time went on it was inevitable that the same causes which had caused the more ancient and greater state to crumble away, should be actively at work on the second. It has already been shown that two religions existed in Montezuma’s time the respective embodiments of which were Huitzilopochtli and Tezcatlipoca. It is an interesting fact, related by Bernal Diaz, that the idols of both stood together in one tower at the summit of the great temple and were alike, “because they were brothers.” At the same time whilst Tezcatlipoca’s image was decorated with obsidian (=tezcatl) Huitzilopochtli’s was encrusted with turquoises. It is curious to note how closely the old soldier’s description of these idols answers to that of the great dualistic statue which has been discussed in the preceding pages. His account contains the following details: “In this hall were what resembled two altars with very richly [ornamented or carved] platforms on the top of the roof or ceiling. On each altar was a statue, as of a giant, very tall in body and very stout. The first, which represented Huitzilopochtli, had a very wide, deformed or monstrous face and forehead, and terrifying eyes ... around his neck were faces of Indians and what were hearts. These were of gold whilst the former were of silver inlaid with blue mosaic-work. The entire body was covered with mosaic-work, gold and beads and misshapen pearls, all fastened to it with a kind of cement or glue. Encircling the body were what were like huge serpents made of gold and mosaic.... The idol was of Tezcatlipoca, and its eyes were made of shining black stone [obsidian] called Tezcat. The statues were alike because they were said to be brothers. Tezcatlipoca was the lord of the Underworld ...