אַ שפּראַך איז אַ דיאַלעקט מיט אַן אַרמיי און פֿלאָט
A shprakh iz a dialekt mit an armey un flot.
"A language is a dialect with an army and navy."
–attrib. anonymous New York City high school teacher, c. 1944

Τὸ σοφὸν δ' ου σοφία.
"Cleverness is not wisdom."
Euripides, Βάκχαι, 395