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Wellsprings
ethics

Unity of the Virtues

ἑνότης τῶν ἀρετῶν

Socrates made a startling claim: the virtues — courage, justice, temperance, piety, wisdom — aren't separate traits but one and the same thing, so that to truly have one is to have them all.

The unity of the virtues is the claim that the virtues are not separate qualities but fundamentally interconnected, so that possessing one virtue requires possessing all the others. This doctrine was developed primarily by Socrates and endorsed by the Stoics, who argued that virtues share common rational principles and cannot be isolated from one another. A person who possesses courage, for instance, must also possess wisdom, justice, and temperance because all virtues flow from a single understanding of what is good.

This thesis had a radical implication for moral development. It meant that you could not claim to be courageous while acting unjustly, or temperate while lacking wisdom, since these qualities are mutually dependent. Some thinkers like Menedemus of Eretria took the idea further, arguing that virtue is essentially one thing expressed through different names. This framework rejected the notion that someone might excel in one moral area while failing in another, instead insisting on an integrated moral character grounded in unified rational understanding.

Where this idea shows up

36 Greek sources

Where to read it