[150] Virtue again has caused houses, and cities, and countries to be inhabited in a better manner, making men competent to manage houses and cities, and fit to associate with one another. Virtue also has introduced most excellent laws, and has sown the seeds of peace everywhere; since, from the contrary habit, things of a contrary character do naturally arise—war, lawlessness, bad constitutions, confusion, unsuccessful voyages, overthrows, that which, in science, is the most grievous of all diseases, namely, cunning, from which, instead of art, all kinds of evil artifice has flowed. Very necessarily, therefore, will virtue be divided among all nations, which are large and collected systems of [104] living beings and things taken together, for the advantage of those who receive her.