YOU will commit the fewest faults in judging, if you are faultless in your own life.
EPICTETUS. FRAGMENTS. 57.
USE thyself, as often as thou seest any man do anything, presently if it be possible to say unto thyself. What is this man's end in this his action? But begin this course with thyself first of all, and diligently examine thyself concerning whatsoever thou doest.
MARCUS AURELIUS. MEDITATIONS. Book x. 37.
PIERCE and penetrate into the estate of everyone's understanding that thou hast to do with: as also make the estate of thine own open, and penetrable to any other.
MARCUS AURELIUS. MEDITATIONS. Book viii. 58.