Parallel
Proverbs 12:23
Swete's Septuagint · Berean Standard Bible
ἀνὴρ συνετὸς θρόνος αἰσθήσεως, καρδία δὲ ἀφρόνων συναντήσεται ἀραῖς.
A shrewd man keeps his knowledge to himself, but a foolish heart proclaims its folly.