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. 18.) The Lord having admonished us concerning hasty and unjust judgment; and because that they are most given to rash judgment, who judge concerning things uncertain; and they most readily find fault, who love rather to speak evil and to condemn than to cure and to correct; a fault that springs either from pride or jealousy—therefore He subjoins, Why seest thou the mote in thy brother’s eye, and seest not the beam in thy own eye?