One of the most important duties of the priesthood was that of education, to which certain buildings were appropriated within the enclosure of the principal temple. Here the youth of both sexes, of the higher and middling orders, were placed at a very tender age. The girls were intrusted to the care of priestesses; for women were allowed to exercise sacerdotal functions, except those of sacrifice.[117] In these institutions the boys were drilled in the routine of monastic discipline; they decorated the shrines of the gods with flowers, fed the sacred fires, and took part in the religious chants and festivals. Those in the higher school--the _Calmecac_, as it was called--were initiated in their traditionary lore, the mysteries of hieroglyphics, the principles of government, and such branches of astronomical and natural science as were within the compass of the priesthood. The girls learned various feminine employments, especially to weave and embroider rich coverings for the altars of the gods. Great attention was paid to the moral discipline of both sexes. The most perfect decorum prevailed; and offences were punished with extreme rigor, in some instances with death itself. Terror, not love, was the spring of education with the Aztecs.[118] At a suitable age for marrying, or for entering into the world, the pupils were dismissed, with much ceremony, from the convent, and the recommendation of the principal often introduced those most competent to responsible situations in public life. Such was the crafty policy of the Mexican priests, who, by reserving to themselves the business of instruction, were enabled to mould the young and plastic mind according to their own wills, and to train it early to implicit reverence for religion and its ministers; a reverence which still maintained its hold on the iron nature of the warrior, long after every other vestige of education had been effaced by the rough trade to which he was devoted.