Joy as a function. A definition of human happiness through the deed: "a man's joy (εὐφροσύνη) is to do DOGMAwhat is his own, human" (τὰ ἴδια ἀνθρώπου). Not in pleasure (cf. 8.10, 8.19) but in the fulfilment of one's own nature; hence four "proper" works, distributed across the disciplines.

Four proper works. (1) DOGMA"Goodwill to one's kind" (εὔνοια πρὸς τὸ ὁμόφυλον) — the discipline of action, sociability. (2) "Disdain for the movements of the senses" (ὑπερόρασις τῶν αἰσθητικῶν κινήσεων) — not to be led by sensation. (3) TERM"Discernment of the plausible impressions" (διάκρισις τῶν πιθανῶν φαντασιῶν) — the discipline of assent: not to take the "convincing" for the true without testing (cf. 8.7 — assent to nothing false; 8.13). (4) EXERCISE"Survey of the nature of the Whole" (ἐπιθεώρησις τῆς τῶν ὅλων φύσεως) and of what comes to pass by it — the discipline of desire, the physiological gaze. The four points are a compact map of the whole practice: toward people, toward the body, toward judgment, toward the cosmos. The strict term by the word is φαντασία (φαντασιῶν); φύσις sits within the phrase "the nature of the Whole." The governing discipline is action (to do one's own), the sustaining one assent (to discern the impressions).