Family

And the Lord God said: It is not good for man to be alone: let us make him a help like unto himself.
And the Lord God having formed out of the ground all the beasts of the earth, and all the fowls of the air, brought them to Adam to see what he would call them: for whatsoever Adam called any living creature the same is its name.
And Adam called all the beasts by their names, and all the fowls of the air, and all the cattle of the field: but for Adam there was not found a helper like himself.
Then the Lord God cast a deep sleep upon Adam: and when he was fast asleep, he took one of his ribs, and filled up flesh for it.
And the Lord God built the rib which he took from Adam into a woman: and brought her to Adam.
And Adam said: This now is bone of my bones, and flesh of my flesh; she shall be called woman, because she was taken out of man.
Wherefore a man shall leave father and mother, and shall cleave to his wife: and they shall be two in one flesh.

Now if in this particular science any one would attend to its original seeds, and their first shoot, he would then as in others have the subject perfectly before him; and perceive, in the first place, that it is requisite that those should be joined together whose species cannot exist without each other, as the male and the female, for the business of propagation; and this not through choice, but by that natural impulse which acts both upon plants and animals also, for the purpose of their leaving behind them others like themselves.

Forasmuch as each man is a part of the human race, and human nature is something social, and hath for a great and natural good, the power also of friendship; on this account God willed to create all men out of one, in order that they might be held in their society not only by likeness of kind, but also by bond of kindred. Therefore the first natural bond of human society is man and wife. Nor did God create these each by himself, and join them together as alien by birth: but He created the one out of the other, setting a sign also of the power of the union in the side, whence she was drawn, was formed. For they are joined one to another side by side, who walk together, and look together whither they walk. Then follows the connexion of fellowship in children, which is the one alone worthy fruit, not of the union of male and female, but of the sexual intercourse. For it were possible that there should exist in either sex, even without such intercourse, a certain friendly and true union of the one ruling, and the other obeying.

The most ancient of all societies, and the only one that is natural, is the family: and even so the children remain attached to the father only so long as they need him for their preservation. As soon as this need ceases, the natural bond is dissolved. The children, released from the obedience they owed to the father, and the father, released from the care he owed his children, return equally to independence. If they remain united, they continue so no longer naturally, but voluntarily; and the family itself is then maintained only by convention.