Indeed, the great object of war, with the Aztecs, was quite as much to gather victims for their sacrifices as to extend their empire. Hence it was that an enemy was never slain in battle, if there were a chance of taking him alive. To this circumstance the Spaniards repeatedly owed their preservation. When Montezuma was asked “why he had suffered the republic of Tlascala to maintain her independence on his borders,” he replied, “that she might furnish him with victims for his gods”! As the supply began to fail, the priests, the Dominicans of the New World, bellowed aloud for more, and urged on their superstitious sovereign by the denunciations of celestial wrath. Like the militant churchmen of Christendom in the Middle Ages, they mingled themselves in the ranks, and were conspicuous in the thickest of the fight, by their hideous aspect and frantic gestures. Strange, that, in every country, the most fiendish passions of the human heart have been those kindled in the name of religion!31
The influence of these practices on the Aztec character was as disastrous as might have been expected. Familiarity with the bloody rites of sacrifice steeled the heart against human sympathy, and begat a thirst for carnage, like that excited in the Romans by the exhibitions of the circus. The perpetual recurrence of ceremonies, in which the people took part, associated religion with their most intimate concerns, and spread the gloom of superstition over the domestic hearth, until the character of the nation wore a grave and even melancholy aspect, which belongs to their descendants at the present day. The influence of the priesthood, of course, became unbounded. The sovereign thought himself honored by being permitted to assist in the services of the temple. Far from limiting the authority of the priests to spiritual matters, he often surrendered his opinion to theirs, where they were least competent to give it. It was their opposition that prevented the final capitulation which would have saved the capital. The whole nation, from the peasant to the prince, bowed their necks to the worst kind of tyranny, that of a blind fanaticism.