
Augustine of Hippo
Catena Aurea · Matthäusevangelium 7
And why beholdest thou the mote that is in thy brother’s eye, but considerest not the beam that is in thine own eye? Or how wilt thou say to thy brother, Let me pull out the mote out of thine eye; and, behold, a beam is in thine own eye? Thou hypocrite, first cast out the beam out of thine own eye; and then shalt thou see clearly to cast out the mote out of thy brother’s eye.
(Serm. in Mont. ii. 19.) For to reprove sin is the duty of the good, which when the bad do, they act a part, dissembling their own character, and assuming one that does not belong to them.