This section of the letter is full of what I might call the “economic position on social interaction.” We’re talking a lot about give and take, benefits or profits, capital and interest. It reminded me of this, also:
“…[S]ince I thought it improper to take something from a person who had himself not received anything.”
The Cynic Epistle in question has a sort of capitalist tinge, that the mendicant philospher is giving just value for what we begs, namely his teachings and example. Your Sage, however, seems to be concerned with giving better than she gets. But we still see some of the former:
“For anyone who receives a benefit more gladly than he repays it is mistaken.”
Overall, this kind of example I think is a good one. It take a rather heady subject and couches it in the very mundane sort of interaction we’re very familiar with.
Looking forward to the rest of the letter.