And cousins and all other relatives derive their bond of union from these, that is to say, from their community of origin: and the strength of this bond varies according to their respective distances from the common ancestor.
Further: the Friendship felt by children towards parents, and by men towards the gods, is as towards something good and above them; because these have conferred the greatest possible benefits, in that they are the causes of their being and being nourished, and of their having been educated after they were brought into being.
And Friendship of this kind has also the pleasurable and the profitable more than that between persons unconnected by blood, in proportion as their life is also more shared in common. Then again in the Fraternal Friendship there is all that there is in that of Companions, and more in the good, and generally in those who are alike; in proportion as they are more closely tied and from their very birth have a feeling of affection for one another to begin with, and as they are more like in disposition who spring from the same stock and have grown up together and been educated alike: and besides this they have the greatest opportunities in respect of time for proving one another, and can therefore depend most securely upon the trial.
Between Husband and Wife there is thought to be Friendship by a law of nature: man being by nature disposed to pair, more than to associate in Communities: in proportion as the family is prior in order of time and more absolutely necessary than the Community. And procreation is more common to him with other animals; all the other animals have Communion thus far, but human creatures cohabit not merely for the sake of procreation but also with a view to life in general:209 because in this connection the works are immediately divided, and some belong to the man, others to the woman: thus they help one the other, putting what is peculiar to each into the common stock.