Enchiridion · §48

ἰδιώτου θέσις καὶ χαρακτήρ· οὐδέποτε ἐξ αὑτοῦ προσδοκᾷ ὠφέλειαν ἢ βλάβην, ἀλλ᾽ ἀπὸ τῶν ἔξω. φιλοσόφου θέσις καὶ χαρακτήρ· πᾶσαν ὠφέλειαν καὶ βλάβην ἐξ ἑαυτοῦ προσδοκᾷ.σημεῖα προκόπτοντος· οὐδένα ψέγει, οὐδένα ἐπαινεῖ, οὐδένα μέμφεται, οὐδένα κατηγορεῖ, οὐδὲν περὶ ἑαυτοῦ λέγει ὡς ὄντος τινὸς ἢ εἰδότος τι. ὅταν ἐμποδιστῇ τι αὐτῷ ἢ κωλυθῇ, ἑαυτῷ αἰτιᾶται.

idiōtou thesis kai charaktēr; oudepote ex hautou prosdoka ōphelian ē blabēn, all' apo tōn exō. philosophou thesis kai charaktēr; pasan ōphelian kai blabēn ex heautou prosdoka. sēmeia prokoptontos; oudena psegei, oudena epainei, oudena memphetai, oudena katēgorei, ouden peri heautou legei hōs ontos tinos ē eidotos ti.

The position and character of an ordinary person: they never expect benefit or harm from themselves, only from external things. The position and character of a philosopher: they expect all benefit and harm from themselves alone. Signs of genuine progress: they blame no one, praise no one, complain about no one, accuse no one. They say nothing of themselves as though they are something or know something. When they are blocked or hindered, they blame themselves. And if anyone praises them, they laugh inwardly at the praise; if blamed, they offer no defense.

— Enchiridion 48

Source: Greek (Schenkl/Oldfather critical edition tradition) + Long 1877 English translation