prokopton

The Stoics held the sage (sophos) as an unreachable ideal — the perfectly virtuous, perfectly rational human who never errs in judgment or assent. By their own admission, none of them claimed to be one. (Epictetus, in the famous Discourses 2.19 passage, asks his audience to show him a sage; the rhetorical force of the demand implies he has not met one.) The prokoptōn is therefore the working category in which every actual Stoic practitioner places himself — the one performing kathēkonta in the absence of the katorthōmata of the sage. The distinction matters because it disciplines expectations. If the standard is the sage, every practitioner is failing all the time. If the standard is the prokopton, the question shifts: am I further along than I was a year ago? Am I cured of any habit, even one? Have I caught one impression today that I would have granted assent to last week? Progress is the measure, not perfection.

Epictetus's Discourses 1.4 — On Progress — is the canonical passage. He warns against the student who thinks reading philosophy is progress. The marker of real prokopē is in conduct, sustained by prosochē: less anger, less envy, less fear, less dependence on what is outside your power. The library does not measure it. The behaviour does.

The closing line of Discourses 2.19 (the show me a Stoic passage) gives the prokopton his promotion: if you cannot show me a fully formed Stoic, show me at least one who is forming himself, one who has set his feet on the path. That is the practitioner. Not the sage, not the failure — the one en route.