οὐ γὰρ πράξιν ἀγαθὴν, ἀλλὰ καὶ εὖ ποεῖν αὐτὴν → it does not suffice to do good–one must do it well
subs.
P. and V. πάχος, τό (Eur., Cycl. 380), P. παχύτης, ἡ, πολυσαρκία, ἡ (Xen.).