EPICTETUS. DISCOURSES. Book iii. §6. ¶4.WHATEVER rules you have deliberately proposed to yourself for the conduct of life, abide by them as so many laws, and as if you would be guilty of impiety in transgressing any of them; and do not regard what anyone says of you, for this, after all, is no concern of yours.
EPICTETUS. DISCOURSES. Book i. §4. ¶4.