The three disciplines in a single line. The whole Stoic telos is compressed into three "present" (παροῦσα) demands upon the present moment: (1) TERMὑπόληψις καταληπτική — a judgement that "grasps" the thing as it is (the discipline of assent); (2) πρᾶξις TERMκοινωνική — action directed to the common good (the discipline of action); (3) διάθεσις DOGMAεὐαρεστική — a disposition that gladly accepts all that comes "from the external cause" (the discipline of desire). This is Marcus' most compact statement of Hadot's three topoi; its negative twin is 9.7 (wipe out φαντασία, halt ὁρμή, quench ὄρεξις). "It is enough" (ἀρκεῖ): nothing more is needed for the good life — no long span, no outward goods.

"From the external cause." The decisive qualifier is in the third member: εὐαρεστεῖν is owed only to what comes παρὰ τῆς ἐκτὸς αἰτίας — what is not in my power. What is in my power (judgement, action) is not "accepted" but done rightly; what is outside it is gladly received. Thus the triad draws exactly the line of the up-to-us and not-up-to-us. The governing discipline is assent (which opens the list), but the passage is synthetic — it holds all three at once.