Hicks: Two sorts of happiness can be conceived, the one the highest possible, such as the gods enjoy, which cannot be augmented, the other admitting addition and subtraction of pleasures.
Yonge: Happiness must be understood in two senses; the highest happiness, such as is that of God, which admits of no increase; and another kind, which admits of the addition or abstraction of pleasures.
Mensch: Two kinds of happiness (Τὴν εὐδαιμονίαν) can be conceived: the highest happiness such as the gods enjoy, which cannot be increased; and the kind that allows for the addition and subtraction of pleasures.
Original text: Τὴν εὐδαιμονίαν διχῆ νοεῖσθαι, τήν τε ἀκροτάτην, οἵα ἐστὶ περὶ τὸν θεόν, ἐπίτασιν οὐκ ἔχουσαν: καὶ τὴν <κατὰ τὴν> προσθήκην καὶ ἀφαίρεσιν ἡδονῶν.
Τὴν εὐδαιμονίαν διχῆ νοεῖσθαι, "Two kinds of happiness (Τὴν εὐδαιμονίαν) can be conceived"
τήν τε ἀκροτάτην, οἵα ἐστὶ περὶ τὸν θεόν, "highest happiness such as the gods enjoy"
ἐπίτασιν οὐκ ἔχουσαν: cannot be increased in intensity
καὶ τὴν <κατὰ τὴν> προσθήκην καὶ ἀφαίρεσιν ἡδονῶν. addition and removal of pleasures (plural)