Epictetus was a Greek speaking Stoic philosopher. He was born a slave at Hierapolis, Phrygia (present day Pamukkale, Turkey), and lived in Rome until his banishment, when he went to Nicopolis in north-western Greece for the rest of his life. His teachings were written down and published by his pupil Arrian in his Discourses.
Epictetus taught that philosophy is a way of life and not just a theoretical discipline. To Epictetus, all external events are determined by fate, and are thus beyond our control; we should accept whatever happens calmly and dispassionately. However, individuals are responsible for their own actions, which they can examine and control through rigorous self-discipline.
Bio from Wikipedia, the free encyclopedia. Photo by Frontispiece drawn by “Sonnem.” (? hard to read, left bottom corner) and engraved by “MB” (bottom right corner). Image scanned by the John Adams Library at the Boston Public Library. Image slightly improved by Aristeas. [Public domain], via Wikimedia Commons.