The offering made by the Brahman in the morning is supposed to produce the sun, and we are told that "assuredly it would not rise, were he not to make that offering." The ancient Mexicans conceived the sun as the source of all vital force; hence they named him Ipalnemohuani, "He by whom men live." But if he bestowed life on the world, he needed also to receive life from it. And as the heart is the seat and symbol of life, bleeding hearts of men and animals were presented to the sun to maintain him in vigour and enable him to run his course across the sky. Thus the Mexican sacrifices to the sun were magical rather than religious, being designed, not so much to please and propitiate him, as physically to renew his energies of heat, light, and motion. The constant demand for human victims to feed the solar fire was met by waging war every year on the neighbouring tribes and bringing back troops of captives to be sacrificed on the altar. Thus the ceaseless wars of the Mexicans and their cruel system of human sacrifices, the most monstrous on record, sprang in great measure from a mistaken theory of the solar system. No more striking illustration could be given of the disastrous consequences that may flow in practice from a purely speculative error. The ancient Greeks believed that the sun drove in a chariot across the sky; hence the Rhodians, who worshipped the sun as their chief deity, annually dedicated a chariot and four horses to him, and flung them into the sea for his use. Doubtless they thought that after a year's work his old horses and chariot would be worn out. From a like motive, probably, the idolatrous kings of Judah dedicated chariots and horses to the sun, and the Spartans, Persians, and Massagetae sacrificed horses to him. The Spartans performed the sacrifice on the top of Mount Taygetus, the beautiful range behind which they saw the great luminary set every night. It was as natural for the inhabitants of the valley of Sparta to do this as it was for the islanders of Rhodes to throw the chariot and horses into the sea, into which the sun seemed to them to sink at evening. For thus, whether on the mountain or in the sea, the fresh horses stood ready for the weary god where they would be most welcome, at the end of his day's journey.