O philosophy, life's guide! O searcher-out of virtue and expeller of vices! What could we and every age of men have been without thee? Thou hast produced cities; thou hast called men scattered about into the social enjoyment of life.
[Lat., O vitae philosophia dux! O virtutis indagatrix, expultrixque vitiorum! Quid non modo nos, sed omnino vita hominum sine et esse potuisset? Tu urbes peperisti; tu dissipatos homines in societatum vitae convocasti.]
It is a man's own dishonesty, his crimes, his wickedness, and boldness, that takes away from him soundness of mind; these are the furies, these the flames and firebrands, of the wicked.
Care should be taken that the punishment does not exceed the guilt; and also that some men do not suffer for offenses for which others are not even indicted.
A man does not wonder at what he sees frequently, even though he be ignorant of the reason. If anything happens which he has not seen before, he calls it a prodigy.