σιγᾶν ἄμεινον ἢ λαλεῖν ἃ μὴ πρέπει → it's better to keep silence than to say what's not appropriate (Menander)
P. and V. γνώμη, ἡ, φρόνησις, ἡ, τὸ σῶφρον, τὸ συνετόν, σύνεσις, ἡ.
power of distinguishing: P. and V. διάγνωσις, ἡ.
