He that wanteth understanding will think upon vain things: and a foolish man erring imagineth follies.
WEB
Sirach 16:23
He who is lacking in understanding thinks about these things. An unwise and erring man thinks foolishly.
Parallel Translations
He that lacks understanding will think upon vain things: and a foolish man erring imagines follies.
He that wanteth understanding will think upon vain things: and a foolish man erring imagineth follies.