For it is impossible for any one to begin to learn what he thinks that he already knows.
Authentication Score 2
Original Citation
Epictetus. Ἐπικτήτου διατριβαί, Epiktētou diatribai [The Discourses of Epictetus]. c. 108, bk 2, ch 17.
Current Citation
Epictetus. "The Discourses." Discourses and Other Writings, edited and translated by Robert Dobbin. Penguin Classics, 2008, bk. 2, ch. 17.