Consequently neither is the hair to be dyed, nor grey hair to have its colour changed. For neither are we allowed to diversify our dress. And above all, old age, which conciliates trust, is not to be concealed. But God’s mark of honour is to be shown in the light of day, to win the reverence of the young. For sometimes, when they have been behaving shamefully, the appearance of hoary hairs, arriving like an instructor, has changed them to sobriety, and paralyzed juvenile lust with the splendour of the sight.