To oneself, no less than to others. A one-line maxim of self-respect derived from social ethics. The logic runs by contrast: "I am not worthy (οὐκ ἄξιος) to grieve myself" — because "I never willingly (ἑκών) grieved another." One who spares his neighbor has all the less right to torment himself: one's own "I" falls within the same circle as the neighbor, and deserves the same DOGMAgoodwill.

Against self-punishment. The subtlety lies in applying the social norm to oneself. The Stoic does no harm to others not by calculation but by the nature of a rational-social being; but that same nature forbids self-torture too — by guilt, gloom, self-contempt. "Willingly" (ἑκών) matters: involuntary griefs (pain, loss) do not count; the point is not to choose sorrow. The background is the Socratic "no one errs willingly" and "the best way of avenging thyself is not to become like the wrong doer" (6.6): toward oneself, the same measure of good temper. There are no term-lemmata in the text. The governing discipline is desire (not to choose grief over oneself), the sustaining one action (to harm neither another nor oneself).