SInce all of us have unlimited time to read every possible article on this subject (joke!), here is the Packer article that DeWitt is referencing. I read it when I first found it several years ago, but don't remember much about it. I seem to remember that she questions Torquatus' illustration of the best and worst lives because she thinks that the description of the best life is too active, which is a position I disagree with, so I don't cite the article very often. But it's possible that the rest of the article touches on the issue that we are discussing here (the manner of presenting arguments about the "greatest good), so it might be worth re-reading.
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CIcero's Presentation of Epicurean Ethics - By Mary Porter Packer (1938)

A study based primarily on De Finibus I and II
Cassius
