[78] [cap.23] Now it is not without a purpose that the differences between these persons are recorded by the lawgiver. For in the case of those who practise virtue and improve, and become better, their deliberate choice of the good bears testimony that their labour shall not be dismissed without its reward; but in the case of those who are endued with self-taught and naturally implanted wisdom, it follows that reason is betrothed to them not by their own act, but by God, and that they take unto themselves knowledge, the fitting companion through life of the wise.