On Rewards and Punishments (65-66)

And thus the soul becoming a perfect company of virtues, by means of these three most excellent patronesses, nature, instruction, and meditation, and not having left one single spot in itself empty, so as to allow of the entrance of anything else, engenders perfect number, namely, two lots of sons, of six in each, being a representation and imitation of the circle of the zodiac, in order to the improvement of everything in them: this is the family exempt from all injury, being continually devoted to the study of the holy scriptures, both in their literal sense and also in the allegories figuratively contained in them: which received as a prize, as I have said before, the supreme authority over each of the tribes of the nation.

Of this house therefore, as it increased and became very populous in process of time, well regulated cities were founded, being schools of wisdom, and justice, and holiness, in which also the means of acquiring all other virtue was investigated in a grave manner suited to the importance of the subject.