Here profits not
To tell the whole truth with clear face unveiled.
Often is man's best wisdom to be silent.
οὔ τοι ἅπασα κερδίων
φαίνοισα πρόσωπον ἀλάθει᾿ ἀτρεκές·
καὶ τὸ σιγᾶν πολλάκις ἐστὶ σοφώ-
τατον ἀνθρώπῳ νοῆσαι.
φαίνοισα πρόσωπον ἀλάθει᾿ ἀτρεκές·
καὶ τὸ σιγᾶν πολλάκις ἐστὶ σοφώ-
τατον ἀνθρώπῳ νοῆσαι.
Original text (Ancient Greek)
Notes from Wikiquote
Nemean XI (446 BC?)