Since God is the highest good, he would not allow any evil to exist in his works unless his omnipotence and goodness were such as to bring good even out of evil.
For though a man should be a complete unbeliever in the being of gods; if he also has a native uprightness of temper, such persons will detest evil in men; their repugnance to wrong disinclines them to commit wrongful acts; they shun the unrighteous and are drawn to the upright.