Working Hard, or Hardly Working?

"I can't call a person a hard worker just because I hear they read and write, even if working at it all night. Until I know what a person is working for, I can't deem them industrious....I can if the end they work for is their own ruling principle, having it be and remain in constant harmony with Nature."

- Epictetus, Discourses, 4.4.41; 43