The preservation and increase of life is the foundation of the teaching of the Avesta. The good life of nature is promoted by planting and agriculture, by tending the useful and destroying the pernicious animals; and by posterity provision is to be made for the life of men. From this point of view the Vendidad lays especial weight on marriage. "I declare," Auramazda says, "that the married is before the unmarried, and he that has a house before him that has none, and the father of children before the childless."[376] We can only ascertain very incompletely from the remaining fragments of the Avesta the rules which it prescribed for family life. We see that bringing about a marriage was regarded as a meritorious work, and marriage between close relations was considered happy. Yet maidens are not to be given in marriage before their fifteenth year.[377] To those who have long remained unmarried the god Haoma, the special protector of life, sends truthful, active husbands, gifted with good understanding (p. 125). We never hear of any difference of the orders in contracting marriage; nor is there the least hint that the priest can only marry a wife of priestly blood, or the husbandman a wife of his own class. On the other hand, the strictest directions are given that the worshippers of Auramazda are only to marry among themselves; marriage with those of an alien religion is severely reprobated. "A man who mingles the seed of the faithful and the unbelievers, the seed of the worshippers of the Daevas with the worshippers of Mazda, keeps back a third part of the flowing water, a third part of the increase of the blooming plants, and their golden fruits; he annihilates a third part of the clothing of Çpenta Armaiti (the Earth); he robs the just men of a third part of their power, their merits, their purity. They who do this are more destructive than forked serpents, than howling wolves, than the she-wolf which rushes on the flocks, than the thousand-fold brood of the lizard, which pollutes the water."[378] The Vendidad gives the house-father a similar power over his wife and children to that given in Manu's law--so far as we can conclude from certain indications. He is to be spoken of with the same reverence as the house-father on the Ganges; the wife is to be honoured, but is to "be watched perpetually, like the fire of Auramazda."[379] With regard to the education of children, we can only gather from the Vendidad they were to be tended for seven years; "protect dogs for six months, children for seven years;"[380] and boys are to be invested in their fifteenth year with the sacred girdle.[381] We remember the sacred girdle which the three upper castes wore and still wear beyond the Ganges; the investiture with this, and adoption into the family and caste--"the second birth" takes place, according to Manu's law, among the Brahman boys in the eighth year, among the Kshatryas, in the eleventh, and the Vaiçyas in the twelfth. The habit of wearing the