Meditations 5.6.1

Ὁ μέν τίς ἐστιν, ὅταν τι δεξιὸν περί τινα πράξῃ, πρόχειρος καὶ λογίσασθαι αὐτῷ τὴν χάριν. ὁ δὲ πρὸς μὲν τοῦτο οὐ πρόχειρος, ἄλλως μέντοι παρ’ ἑαυτῷ ὡς περὶ χρεώστου διανοεῖται καὶ οἶδεν ὃ πεποίηκεν. ὁ δέ τις τρόπον τινὰ οὐδὲ οἶδεν ὃ πεποίηκεν, ἀλλὰ ὅμοιός ἐστιν ἀμπέλῳ βότρυν ἐνεγκούσῃ καὶ μηδὲν ἄλλο προσεπιζητούσῃ μετὰ τὸ ἅπαξ τὸν ἴδιον καρπὸν ἐνηνοχέναι.

One person, after doing someone a good turn, is ready to charge the favor to his account. Another is not ready to do that, but inwardly still thinks of the recipient as a debtor and knows what he has done. A third, in a way, does not even know what he has done. He is like a vine that has borne a cluster of grapes and seeks nothing further once it has produced its own fruit.