Epictetus. (c.A.D. 50–c.A.D. 138). The Golden Sayings of Epictetus. The Harvard Classics. 1909–14.
CLVIII
If thou wouldst make progress, be content to seem foolish and void of understanding with respect to outward things. Care not to be thought to know anything. If any should make account of thee, distrust thyself.