Epictetus · Fragments
Fragment 2
From Arrian the pupil of Epictetus
He who is dissatisfied with what he has and what has been given him by fortune is a layman in the art of living, but the man who bears all this in a noble spirit and makes a reasonable use of all that comes from it deserves to be considered a good man.
Epictetus, Discourses, Fragment 2, translated by W. A. Oldfather (1925–1928). The Stoic Library.