55–135 CE, born in Hierapolis, Turkey, died in Nicopolis, Greece. Stoic philosopher Epictetus was a slave owned by one of Nero’s secretaries and obtained his freedom after Nero’s death. According to Epictetus’s student, Arrian, Epictetus was a powerful orator. Arrian recorded (on paper), transcribed, and compiled his discourses; no writings by Epictetus himself have ever been discovered. Epictetus distinguished between things in our power (prohairetic) and things not in our power (aprohairetic).
That alone is in our power, which is our own work; and in this class are our opinions, impulses, desires, and aversions. What, on the contrary, is not in our power, are our bodies, possessions, glory, and power. Any delusion on this point leads to the greatest errors, misfortunes, and troubles, and to the slavery of the soul.