On Rewards and Punishments (111-112)

This is what the lawgiver in one passage says, while declaring the will of God, that, "thou shalt complete the number of thy days," [*] prophesying thus with great beauty and using great propriety and naturalness of language. For the man who is destitute of all learning, and who disregards the law, does not speak either in reason nor in number, as the old proverb says; but he who has a fair share of instruction and who adheres to the holy laws, receives as his first reward, since he is proved to be a respectable and reputable man, a share in number and arrangement.

And very admirable is this fulness and completeness, not of months or years, but of days, so that no day whatever in the life of a virtuous man ever leaves an empty and open door for the entrance of sins, but is filled in all its parts and all its intervals with absolute virtue and excellence. For virtue and goodness are judged of not by quantity but by quality, for which reason I look upon it that even one day spent with perfect correctness is of equal value with the entire good life of a wise man.