Epictetus. (c.A.D. 50c.A.D. 138). The Golden Sayings of Epictetus.
The Harvard Classics. 190914.
Above all, remember that the door stands open. Be not more fearful than children; but as they, when they weary of the game, cry, I will play no more, even so, when thou art in the like case, cry, I will play no more, and depart. But if thou stayest, make no lamentation.