Gregory the Dialogist : Wherefore those who are over others are to be admonished, that through earnestness of circumspection they have eyes watchful within and round about, and strive to become living creatures of heaven. For the living creatures of heaven are described as full of eyes round about and within. And so it is meet that those who are over others should have eyes within and round about, so as both in themselves to study to please the inward judge, and also, affording outwardly examples of life, to detect the things that should be corrected in others. Subjects are to be admonished that they judge not rashly the lives of their superiors, if perchance they see them act blamably in anything, lest whence they rightly find fault with evil they thence be sunk by the impulse of elation to lower depths. They are to be admonished that, when they consider the faults of their superiors, they grow not too bold against them, but, if any of their deeds are exceedingly bad, so judge of them within themselves that, constrained by the fear of God, they still refuse not to bear the yoke of reverence under them. — Pastoral Rule, Part 3, Chapter 4