Epictetus. (c.A.D. 50–c.A.D. 138). The Golden Sayings of Epictetus.
The Harvard Classics. 1909–14.
CLXXXI
When Xanthippe was chiding Socrates for making scanty preparation for entertaining his friends, he answered:—“If they are friends of ours, they will not care for that; if they are not, we shall care nothing for them!”