οὐ γὰρ πράξιν ἀγαθὴν, ἀλλὰ καὶ εὖ ποεῖν αὐτὴν → it does not suffice to do good–one must do it well
adj.
P. and V. κενός, P. διάκενος.
Desolate: P. and V. ἐρῆμος.
Void of: P. and V. κενός (gen.), ἐρῆμος (gen.); see free from.
Having no legal force: P. ἄκυρος.
Vain, useless: P. and V. κενός, μάταιος.
subs.
P. τὸ κενόν, τό, διάκενον.
Feeling of loss: P. and V. πόθος, ὁ (Plat.).