in Rhetoric, a figure which sets two things in opposition to each other. The word is Greek, compounded of ἀπί against, and μεταβάλλω from περιβάλλω, I shift or transfer, i.e. shifting, or setting two things over-against each other. This figure is twice exemplified in an apophthegm of Musonius; which, on account of its excellence, is called aureum monitum, the golden maxim or precept.

Ἄν τι πρᾶξῃς καλὸν μήτε τοῦτο, ὅπερ πρῶτος εἰχέται, τὸ δὲ παλαιὸν μήτε.

Ἄν τι πρᾶξῃς μεῖζον μήτε ἄριστον, τὸ μὴ ἐδύνασθαι, τὸ δὲ αὐξῆσαι μήτε.

In English thus:

"Allowing the performance of an honourable action to be attended with labour; the labour is soon over, but the honour immortal: whereas, should even pleasure wait on the commission of what is dishonourable, the pleasure is soon gone, but the dishonour eternal."