I also apologize, Macario , but I should have directly responded to the DeWitt quoted passages. I'll try to do that over the weekend. I did see that this line:
Quote from DeWitt
To Epicurus the simple life meant contentment with little and this was called self-sufficiency, which in turn meant freedom: “Of self-sufficiency the most precious fruit is freedom.”
seems to convey to me the idea of contentment in relation to αυτάρκεια.
Thank you again for engaging in this conversation. I know it's been valuable for me so far to get me to delve into this topic.