Most of the literary productions of the ancient Mexicans were stupidly destroyed by the Spanish under Cortés. The first Archbishop of Mexico founded a professorship in 1553 for expounding the hieroglyphs of the Aztecs, but in the following century the study was abandoned. Even the native-born scholars confessed that they were unable to decipher the ancient writing. One of the most ancient books (assigned to Tula, the "Toltec" capital, A. D. 660, and written by Huetmatzin, an astrologer), describes the heavens and the earth, the stars in their constellations, the arrangement of time in the official calendar, with some geography, mythology, and cosmogony. In the fifteenth century the King of Tezcuco published sixty hymns in honor of the Supreme Being, with an elegy on the destruction of a town, and another on the instability of human greatness.

In the same century the three Anahuac states (Acolhua, Mexico, and Tlacopan) formed a confederacy with a constant tendency to give Mexico the supremacy. The two capitals looking at each other across the lake were steadily growing in importance, with all the adjuncts of public works—causeways, canals, aqueducts, temples, palaces, gardens, and other evidences of wealth.

The horror and disgust caused by the Aztec sacrificial bloodshed are greatly increased by considering the number of the victims. The kings actually made war in order to provide as many victims as possible for the public sacrifices—especially on such an occasion as a coronation or the consecration of a new temple. Captives were sometimes reserved a considerable time for the purpose of immolation. It was the regular method of the Aztec warrior in battle not to kill one's opponent if he could be made a captive; to take him alive was a meritorious act in religion. In fact, the Spaniards in this way frequently escaped death at the hands of their Mexican opponents. When King Montezuma was asked by a European general why he had permitted the republic of Tlascala to remain independent on the borders of his kingdom, his reply was, "That she might furnish me with victims for my gods."

In reckoning the number of victims Prescott seems to have trusted too implicitly to the almost incredible accounts of the Spanish. Zumurraga, the first Bishop of Mexico, asserts that 20,000 were sacrificed annually, but Casas points out that with such a "waste of the human species," as is implied in some histories, the country could not have been so populous as Cortés found it. The estimate of Casas is "that the Mexicans never sacrificed more than fifty or a hundred persons in a year."

Notwithstanding the wholesale bloodshed before the shrines of their gory gods, we can still assign to the Aztecs a high degree of civilization. The history of even modern Europe will illustrate this statement, although apparently paradoxical.

Consider "the condition of some of the most polished countries in the sixteenth century after the establishment of the modern Inquisition—an institution which yearly destroyed its thousands by a death more painful than the Aztec sacrifices, ... which did more to stay the march of improvement than any other scheme ever devised by human cunning.... Human sacrifice was sometimes voluntarily embraced by the Aztecs as the most glorious death, and one that opened a sure passage into paradise. The Inquisition, on the other hand, branded its victims with infamy in this world, and consigned them to everlasting perdition in the next."

The difficulty with the Aztecs is how to reconcile such refinement as their extinct civilization showed with their savage enjoyment of bloodshed. "No captive was ever ransomed or spared; all were sacrificed without mercy, and their flesh devoured." The first of the four chief counselors of the empire was called the "Prince of the Deadly Lance," the second "Divider of Men," the third "Shedder of Blood," the fourth "the Lord of the Dark House."

The temples were very numerous, generally merely pyramidal masses of clay faced with brick or stone. The roof was a broad area on which stood one or two towers, from forty to fifty feet in height, forming the sanctuaries of the presiding deities, and therefore containing their images. Before these sanctuaries stood the dreadful stone of sacrifice. There were also two altars with sacred fires kept ever burning.

All the religious services were public, and the pyramidal temples, with stairs round their massive sides, allowed the long procession of priests to be visible as they ceremoniously ascended to perform the dread office of slaughtering the human victims.

Human sacrifices had not originally been a feature of the Aztec worship. But about 200 years before the arrival of the Spanish invaders was the beginning of this religious atrocity, and at last no public festival was considered complete without some human bloodshed.