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The essay examines the description of virtue as a craft that governs the proper use of possessions in Plato’s Euthydemus and Stoicism. In the first part, I discuss Socrates’ parallel between wisdom and the crafts in the Euthydemus, and the resulting argument concerning the value of external and bodily possessions. I then offer some objections, showing how Socrates’ craft analogy allows one to think of possessions as (qualifiedly) good and ultimately fails to offer a defense of virtue’s sufficiency for happiness. In the second part, I examine the Stoics’ craft analogy and note a number of differences from Socrates’ account in the Euthydemus. These include the Stoic claim that external advantages never make any contribution to happiness, even when properly used, and the claim that, unlike other crafts, wisdom does not require any external possessions in order to be exercised and yield benefit and happiness. I then place these differences against the backdrop of the debate regarding virtue’s sufficiency for happiness and argue that the Stoic craft model of virtue fares better than its Socratic antecedent.

This essay examines the early Stoic debates concerning the number of virtues and the differentiation among them. It begins with the defense of virtue’s unity offered by the heterodox Stoic Aristo of Chios and with a comparison between the definitions that Aristo and Zeno offered for the four primary virtues. Aristo maintained that virtue consists exclusively in the knowledge of good and bad. Zeno and his successors presented the virtues as epistemic dispositions whose scopes differ. I conclude that by adding the knowledge of indifferents to the definition of virtue, Zeno and his successors were able to avoid the circularity to which Aristo’s definition of virtue fell victim while providing a way to differentiate among the virtues.

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